The Complete Guide to Dog Weight Pulling

Dog sled team transporting U.S. mail in Alaska, circa 1910. Photograph by John E. Thwaites; University of Washington Special Collections.

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Today, dogs of many breeds and sizes compete under the rules of different organizations. Events may use a sled, a wheeled cart, or a rail system, depending on the sanctioning body and venue. The equipment and scoring may change, but the central task is recognizable: a willing dog in a properly fitted harness moves a measured load over a defined course.

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From Working Dogs to an Organized Sport

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A modern weight pull is a regulated event, and there is no single rulebook for every organization. Eligibility, surfaces, course length, commands, time limits, class divisions, scoring, and titles vary. Before entering a pull or trying to follow a training plan, read the current rules for the specific organization hosting the event.

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Dog Weight Pull Organizations and Sanctioning Bodies

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These organizations are starting points for learning about sanctioned competition. Their current rulebooks and event schedules control the details at their own events.

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International Weight Pull Association (IWPA)

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Organized in November 1984, the International Weight Pull Association promotes sanctioned dog pulling and the working heritage of dogs. IWPA describes its events as dogs pulling a weighted sled on snow or a wheeled cart over a 16-foot course. It publishes rules, events, results, and beginner information. Official site: iwpa.net

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American Pulling Alliance (APA)

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The American Pulling Alliance promotes canine weight pulling through sanctioned events and a published set of rules. Its site provides goals, competition rules, event information, and standings. Official site: weightpull.com

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Unified Pulling Federation (UPF)

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The Unified Pulling Federation sanctions weight pulls and publishes rules, event results, and points information. Its program also includes other performance events, such as mill racing. Official site: unifiedweightpullfederation.com

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American Dog Breeders Association (ADBA)

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The American Dog Breeders Association sanctions weight-pull events and publishes event rules and materials for competitors and judges. Dogs can earn points toward the ADBA Weight Pull ACE title, with further Ace of Ace degrees. Official weight-pull page: adbadog.com

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United Kennel Club (UKC)

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The United Kennel Club offers weight pull among its performance sports. UKC publishes an official rulebook, forms, event listings, and results. Its introductory description covers a dog pulling a weighted cart or sled a prescribed distance within a time limit. Official weight-pull page: ukcdogs.com

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European Pulling Federation (EPF)

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The European Pulling Federation provides an international point of reference for this guide. EPF says it was formed in 2019 from the former United Pulling Federation. That historical name is distinct from today's Unified Pulling Federation (UPF) listed above. Official site: europeanpullingfederation.eu

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How Does a Dog Weight Pull Competition Work?

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In a dog weight pull competition, a dog wears a weight-pull harness and moves a loaded cart or sled across a marked course. A judge evaluates the attempt under the sanctioning organization's rules. Successful dogs can advance as the load increases, and results determine class placements, awards, and sometimes points or qualifying legs toward titles.

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The sport tests the dog-and-handler team's preparation as well as the dog's pulling ability. A successful attempt requires the dog to understand the task, work on the competition surface, and complete the course within the applicable rules. A Boerboel, terrier, sled dog, or mixed-breed competitor must be prepared for the particular event it enters.

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From Weigh-In to the Final Pull

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A typical event follows this sequence:

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1. Weigh-in and entry: Officials record the dog's body weight and check its eligibility. That weight determines its class and is used for any body-pound calculation.

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2. Handlers' briefing: The judge explains the course, starting load, increments, and relevant procedures.

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3. Harness and hookup: The team enters the pulling area, or chute, and the dog's harness is connected to the cart or sled by a trace line.

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4. The attempt: The dog moves the load across the marked distance. Crossing the finish line with its nose is not enough; the required reference point on the vehicle must reach the finish according to the rules.

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5. Increasing loads: Weight is added between rounds. Where permitted, a handler may pass an increment rather than attempt every load.

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6. Scoring: Officials use valid completed pulls and the event's scoring and tie-breaking rules to determine results. [1][2][3][4][5]

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Sixteen feet and sixty seconds are common, but they are not universal. For example, ADBA specifies fifteen feet in sixty seconds. Rules also differ on passes, fouls, tangles, handler contact, and whether a moving cart can finish after the initial time limit. Read the actual rulebook rather than assuming the rules from your last event apply. [1][2][3][4]

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Dog Weight Classes and Competition Divisions Explained

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Weight classes group dogs by the body weight recorded at weigh-in. A class label describes the size of the dog, not the amount on the cart. A dog entered in a 60-pound class is not limited to pulling sixty pounds.

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A division can group several weight classes for broader awards. In some organizations, a division instead reflects a dog's title or competition level. Always check what that term means in the particular rulebook.

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Example: UPF Weight Classes and Divisions

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The UPF rules revised June 20, 2026 list the following groups: [1]

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Light Weight: 0-19 lb; 20-29 lb; 30-39 lb

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Middle Weight: 40-49 lb; 50-59 lb; 60-69 lb

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Light Heavy Weight: 70-79 lb; 80-89 lb; 90-99 lb

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Heavy Weight: 100-109 lb; 110-119 lb; 120 lb and over (Unlimited)

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These are UPF's groups, not a universal class chart. Other organizations use different boundaries and weigh-in procedures. Follow the official handling of fractional weights near a class boundary.

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An Unlimited class has no upper body-weight boundary under that organization's class structure. It does not mean unlimited loading, unlimited time, or an absence of equipment and safety rules.

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Dog Weight Pulling on Wheels, Rails, and Snow

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The dog's footing and the equipment carrying the load are separate parts of a pull. "Carpet" describes footing; "rails" describes the cart's track. A carpeted event may use a rail cart or a conventional wheeled cart, so carpet alone does not identify the format.

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Wheels: A cart rolls on tires over the permitted surface. What the team must handle: footing, cart resistance, direction, and the conditions of the course.

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Rails: The cart's wheels run on fixed rails; the dog pulls along the surface between them. What the team must handle: staying on the pulling surface, maintaining alignment, and using the available traction.

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Snow / sled: A loaded sled travels on runners across a prepared snow surface. What the team must handle: snow footing, runner movement, and changing winter conditions.

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Which Organizations Offer Which Formats?

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UPF's current rules list rails on carpet and wheels on dirt or carpet. APA's posted rules cover conventional wheeled carts and rail systems. IWPA describes competition on wheels and snow. The UKC rulebook includes rail carts, wheeled carts, and sleds. ADBA publishes its own cart-based competition rules and surface requirements. Confirm the advertised equipment with the host before entering. [1][2][3][4][6]

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Why the Same Number of Pounds Does Not Mean the Same Pull

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The load on the equipment is not a direct measurement of force at the harness. Rolling resistance, runner friction, grade, equipment condition, and footing affect the effort required to move it. Rail systems can accommodate much higher recorded loads than some other setups without making the task technically simple.

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A fair comparison identifies the organization, equipment, surface, distance, and event conditions. Dividing by body weight adjusts the score for dog size; it does not remove differences between tracks or surfaces. Even two rail systems should not automatically be treated as physically identical.

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Why We Consider Rail Weight Pulling the Most Technically Demanding Format

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At Cold River Boerboels, we consider rail weight pulling the most technically demanding format to prepare a dog for because of the additional platform and traction skills involved. That is our assessment as competitors and trainers. Each format brings its own challenges, and the demands of a particular setup matter.

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With the carpeted rail platforms we train and compete on, teaching the dog to move weight is only part of the job. We also teach the dog to:

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• Stay on the pulling platform: The dog needs confidence working within the available surface and around its edges, especially on an elevated setup.

• Maintain a straight line: Wandering or turning wastes effort and can interfere with effective movement through the harness.

• Use carpet traction effectively: We work on foot placement and how the dog engages its paws and nails with the carpet while maintaining an effective pulling position.

• Remain committed under resistance: As the task becomes more demanding, the dog must continue working without losing its position or stepping away from the task.

• Finish the complete attempt: The dog must keep moving until the equipment has completed the required distance, rather than stopping as soon as it reaches the handler.

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Those skills take preparation. A strong dog that has not learned to work confidently on a rail platform can struggle with the task even before its physical pulling limit is reached. We build familiarity and control at manageable resistance before asking for demanding efforts.

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Cart resistance tells you about the equipment. It does not tell you how much training it took to produce a confident, technically consistent pull.

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Wheels and snow also require skilled preparation. The point is to evaluate the full task: the equipment, the footing, the dog's technique, and the handler's preparation. Rail weight pulling should be understood on those terms.

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Most Weight Pulled vs. Most Weight Pulled per Body Pound

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Dog weight pulling recognizes different kinds of performance. The two commonly discussed awards are Most Weight Pulled (MWP) and Most Weight Pulled per Pound of Body Weight (MWPP), often called the body-pound or percentage award. Organizations use somewhat different abbreviations and award structures.

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Most Weight Pulled (MWP): The Largest Completed Load

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MWP recognizes the greatest valid load moved within the award's eligible group. That may be the whole event, a size division, or another defined group. Ties follow that organization's rules.

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It answers a specific question: which eligible dog moved the heaviest load at this competition?

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Most Weight Pulled per Body Pound (MWPP): Performance Relative to Size

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The body-pound score is calculated by dividing the credited load by the dog's recorded body weight:

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Weight pulled ÷ dog's body weight = times body weight pulled.

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This recognizes a smaller dog's performance without requiring it to move the same absolute load as a much larger dog. Size can contribute to absolute pulling capacity, but size alone does not guarantee a win.

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Here is a hypothetical example using two dogs at the same event and on the same equipment, assuming both are eligible for the awards being compared:

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Dog A: 30 lb body weight; 6,000 lb credited load; 200 times body weight

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Dog B: 150 lb body weight; 15,000 lb credited load; 100 times body weight

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Dog B moved the greater total load. Dog A moved the greater load relative to its size. Each result describes a different achievement. Neither calculation makes the other award meaningless.

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Some result sheets label the body-weight multiple "percent." Strictly, 200 times body weight equals 20,000 percent of body weight. When reading results, check the calculation behind the heading. In our explanations, "times body weight" makes the comparison clear.

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Why Weight Classes and Divisional Awards Matter

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A single overall award cannot tell the whole story when dogs vary dramatically in size. Classes allow competition within defined body-weight groups, while divisional awards recognize accomplishments across a broader but still limited range.

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For example, UPF awards divisional MWP and MWPP, with class placements determined by MWPP. APA's posted rules provide four divisional MWPP awards and MWP awards for dogs seventy pounds and under and seventy-one pounds and over. ADBA provides MWPP awards across three body-weight groups and a separate MWP award. UKC awards MWPP by division, with its own maximum-load and tie rules. [1][2][3][4]

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This is why a results sheet must be read by award category. A dog can move the heaviest load yet finish behind a lighter dog in a class scored by body pound. That is an outcome of the scoring system, not a contradiction in the results.

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Class Placements, Event Awards, and Titles Are Different

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A class placement describes a dog's finish in its class at that event. An MWP or MWPP award recognizes a specified performance within an eligible group. A title reflects the requirements of a separate achievement program, which may involve points or repeated qualifying performances.

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The five organizations covered earlier in this guide each recognize achievement differently. Here are examples of actual weight-pull titles and degrees a reader may encounter:

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• ADBA: Weight Pull ACE is earned at 100 points under its rules. Dogs that reach ACE compete in the ACE of ACE class; further points can lead to the Ace of Ace degrees. ADBA National Champion and a Most Weight Pulled award at Nationals describe separate event accomplishments. [4][7]

• IWPA: Working Dog (WD), Working Dog Excellent (WDE or WDX), and Working Dog Superior (WDS) are degrees earned through repeated qualifying pulls. Its application lists separate standards for wheels and snow. IWPA also awards seasonal regional and championship medals, which are event or season distinctions rather than those Working Dog degrees. [8][5]

• UPF: UPF 1 through UPF 10 are listed as performance titles tied to repeated body-pound thresholds. Its separate point titles are PRO 1 at 100 points, PRO 2 at 200, and successive PRO levels. A UPF Most Weight Pulled award and a PRO title are different achievements. [1]

• APA: Its Professional Series uses Rails titles R1 through R5 and Wheels titles W1 through W5. The levels are called Basic, Intermediate, Advanced, Excellent, and Extreme, with the qualifying standard varying by weight division and surface. APA also lists STAR titles for accumulated points. [9]

• UKC: United Weight Pull (UWP) starts with qualifying pulls at three licensed events. Other UKC titles include Advanced Puller (AP), United Weight Pull Champion (UWPCH), higher championship levels, and versatility titles for performance across vehicles or surfaces. [3]

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These programs set their own requirements. A title earned with one organization should be named with that organization; the same word can mean something different elsewhere.

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What Those Titles Mean at Cold River Boerboels

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Cold River's Sun Wukong became the first Boerboel to earn the ADBA Weight Pull ACE title in the organization's history. He also became the first Boerboel ADBA National Champion. Those are separate accomplishments: the ACE is an earned weight-pull title, while the National Championship recognizes a competition result. [10]

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Sun Wukong's offspring are now earning ADBA ACE titles as well. Seeing that accomplishment appear in the next generation is something we are extremely proud of. It reflects the direction of our breeding and development program and gives us another measurable result to follow as those dogs continue their careers.

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Explore the dogs: Meet Sun Wukong and meet Mr. Wednesday.

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Read the record story: See the documentation behind Sun Wukong and Mr. Wednesday's 22,039-pound performances.

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For readers learning about Boerboel weight pulling, the useful questions are: What did the dog pull? On what equipment? Under which rules? What award or title did that performance earn? Those details give the achievement its meaning.

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Weight Pulling With a Giant Breed Like the Boerboel

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Most of the dogs people picture in weight pull are mid-size, athletic breeds. Giant breeds can pull too, and pull well, but they need a different plan. A Boerboel is a large, heavy dog. The AKC breed standard sets males at 24 to 27 inches at the shoulder, and the AKC weight chart lists the breed at 150 to 200 lb. That size brings real power, and it also puts more load on joints, so the details matter more.

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Wait Longer and Build Slower

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Giant breeds finish growing later than smaller dogs. We keep young Boerboels on harness comfort, focus and light, fun pulls, and we save real loads for a dog that is physically mature and cleared by a vet. Building tendons, ligaments and conditioning takes months, not weeks.

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Know Your Dog’s Competition Weight

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We separate a dog’s house weight, its off-season weight, from its competition weight, the weight the dog performs best at. Cold River’s Sun Wukong competes at about 164 lb. Cold River’s Mr. Wednesday competes at about 186 lb. Two dogs from the same program, more than 20 lb apart, and both pulled 22,039 lb at a UPF event on May 9, 2026. Heavier is not automatically better. Condition, structure and drive decide the pull.

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Fit, Footing and Heat

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A giant dog needs a harness built for its frame, with room through the shoulders and chest so it can drive with its whole body. Heavy dogs also need good traction, so we train on surfaces where they can dig in without slipping. Big, muscular dogs build heat fast, so we keep sessions short, train in cool conditions and always have shade and water ready.

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To see how our dogs train and compete, visit Sun Wukong’s page, Mr. Wednesday’s page and our 22,039 lb world record page.

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Where to Get a Dog Weight Pulling Harness and Equipment

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Once you understand the sport and choose an organization, the next practical question is equipment. The most important piece a dog brings to a pull is a properly fitted freight or weight-pull harness. It connects the dog to the load and should allow the dog to work without restricting normal movement. Each organization sets its own requirements, so check the current rules before buying for a sanctioned event. For example, UPF requires competing dogs to have their own freight harness, and IWPA requires a properly fitted freight or weight-pull type harness. [1][6]

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The cart, rail system, sled, course, weights, and timing equipment are normally supplied or arranged by the event host. If you are training at home, your setup will depend on your dog's experience, the surface, and the type of event you hope to enter. You do not need to own a competition rail system to ask questions, attend an event, or begin learning how the sport works. IWPA notes that some organizers even offer a novice pull with a loaner harness after a sanctioned event. [5][6]

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Cold River Supplies Is Making Weight Pull Harnesses Again

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Good news for Boerboel owners and handlers of other breeds: Cold River Supplies is coming out of retirement and making weight-pull harnesses again. The company is restarting at a measured pace and plans to expand production as it builds back up to full capacity.

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Cold River Supplies' harnesses earned a reputation with serious competitors, many of whom have regarded them as among the best equipment available for the sport. Its owners have spent years at the track learning what matters in a harness. Between them, they bring nearly five decades of experience breeding, raising, training, conditioning, and competing with working dogs. That experience extends across different breeds and body types; it informs the way they design and fit their harnesses today.

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Cold River Supplies made the custom harnesses worn by Cold River’s Sun Wukong, Cold River’s Mr. Wednesday, Cold River’s Conquest, and Cold River’s ALUCARD. See who made the weight pulling harnesses for the strongest dogs in the world.

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Whether your goal is to keep your Boerboel active and in good condition or to prepare a dog for high-level weight-pull competition, the harness should fit the dog and the job. Cold River Supplies offers standard harness options as well as custom-tailored harnesses made for an individual dog. A custom fit allows the maker to account for that dog's proportions and intended use rather than relying on a breed label alone.

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Ask Cold River Supplies about current production, sizing, standard harnesses, and custom orders: Visit Cold River Supplies on Facebook or follow Cold River Supplies on Instagram.

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What to Check Before You Order

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Tell the maker your dog's current measurements, build, age, and planned use. Ask how the harness should sit when the dog leans into a pull and whether it meets the rules of the organization where you intend to compete. If your dog is still growing, expect to reassess fit as its body changes. Bring the harness to an event or knowledgeable puller for a fit check before asking your dog for a demanding effort.

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A properly fitted harness is one part of preparing a dog to work. Start by teaching the task at an appropriate level, then learn the event equipment and rules with experienced people in the sport. In the next section of this guide, we will walk through how to introduce a dog to weight pulling step by step.

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How to Get Started Training Your Dog for Weight Pulling

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You do not need to begin with a heavy cart or a record in mind. Whether you have a Boerboel or another breed, start by teaching your dog what the harness means, how to move forward willingly, and how to work with you. A foundation in everyday handling, walking, recall, and calm behavior around other dogs makes the first visit to a weight-pull event much easier.

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Puppies, Growing Dogs, and When to Begin

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For a puppy, "getting started" can mean meeting experienced pullers, learning simple cues, calmly wearing a properly fitted harness for brief sessions, and building confidence on different safe surfaces. It does not mean finding out how much weight a growing dog can move. The right age for adding resistance and competing depends on that dog's development, health, and the sanctioning organization's rules. Large dogs such as Boerboels need an individual approach rather than a single age or weight target copied from another breed.

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Before a strenuous conditioning program, discuss your dog's health and development with a veterinarian. Check the event's minimum age and eligibility rules separately. A dog can begin learning the game long before it is ready for demanding pulls. [1][3][4][12]

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Build the Skill Before You Build the Load

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1. Make the harness familiar. Let the dog wear a correctly fitted pulling harness in a relaxed setting. Reward calm behavior and check that it stays comfortable as the dog moves.

2. Teach a clear start cue. Practice moving forward with you, then stopping and resetting. Keep the early sessions short and successful.

3. Introduce the sound and feel of a light drag when appropriate. Add resistance gradually for a physically ready dog. Watch its movement and confidence instead of chasing a number on the load.

4. Practice on the surface you intend to use. A dog preparing for rails must learn the platform, straight alignment, and carpet traction. Wheels and snow bring different footing and equipment.

5. Finish with the dog willing to work again. Rest and reassess fit, gait, feet, and attitude between sessions. If the dog hesitates, changes its movement, or seems uncomfortable, stop and work out why before increasing the demand. [11][12][13]

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Conditioning is built over time. Walking, age-appropriate movement, control, and progressive work can support the dog you hope to compete with, but there is no universal drag weight, distance, or weekly schedule for every dog. The individual dog, its maturity, the weather, the training surface, and its response to the previous session all matter. A knowledgeable mentor who can see the dog work is valuable; so is watching a sanctioned pull before entering one. [11][13]

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Be Careful Where You Get Your Weight Pulling Advice

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Dog weight pulling is growing, and so is the number of websites that want a piece of its search traffic. Lately we have watched an influx of people present themselves as authorities on the sport strictly to rank on Google. Many have no real connection to weight pulling. They have never trained a dog for it, never handled one down the chute, never competed and never won. Yet they are publishing beginner guides and training advice as if they helped build the sport.

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We consider that dangerous. Copying a federation's rules and weight classes onto a web page is one thing. Telling a new handler when to start a puppy, how to add weight, or how hard to push a dog is something else entirely. That advice lands on real dogs, real joints and real hearts. When it comes from someone who has never done the work, or from an AI tool repeating what it found somewhere else, nobody behind it knows what the sport actually takes, and the dog is the one who pays for the mistake.

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Before you take anyone's word on how to get into weight pulling, including ours, ask a few simple questions:

1. Have they trained a dog for weight pulling themselves?

2. Have they handled a dog at a sanctioned event?

3. Have they competed, and won, in the events they are writing about?

4. Can you find their dogs in the published results of the organizations they mention?

5. Do they tell you plainly who they are and what their dogs have done?

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If the answers are no, treat that source as a copy of the rulebook at best, and check the rules with the organization itself. Do not use it to decide how to start, how to condition, or what the sport really demands. For the rules, go to the sanctioning bodies listed earlier in this guide. For everything else, go to people who have done the work: experienced handlers, event officials, and the competitors you will meet at a pull.

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That is the standard we hold ourselves to. Everything in this guide comes from years of training, conditioning and competing with our own dogs, including Cold River's Sun Wukong and Cold River's Mr. Wednesday, whose 22,039 lb pulls are on the record. Credibility in this sport is earned at the track, not in a search result.

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Learn From Experienced Pullers: EE&J's The K9 LAB

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Reading about dog weight pulling is a good beginning. One of the best things a new handler can do next is listen to people who have spent years training, conditioning, and competing with dogs. EE&J's The K9 LAB brings together Eli from Cold River Boerboels, Emmanuel from Funny Man Kennels, and Jonathan from Workingbullz. Together, the hosts bring experience across weight pulling and canine conditioning, with stories from real competition and different approaches to developing working dogs.

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Their conversations cover selecting a prospect, introducing a puppy to training at an appropriate stage, harnesses and equipment, conditioning, mentorship, and what actually happens at events. They also bring in perspectives from other dog trainers and canine sports. If you are asking how to start weight pulling with a Boerboel - or how to start with any breed - it is a useful place to hear more than one experienced voice.

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Visit EE&J's The K9 LAB on YouTube.

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Watch Episode 1