Average Weight of a Thoroughbred

Jessica McDaniel
Written by
Last update:

Thoroughbred Weight: How to Weigh Horses

A thoroughbred weight may depend on the horse's conformation, gender, age, and the type of racing it is used for. Thoroughbreds can weigh anywhere between a lean 1200 pounds to a large 1600 pounds. The weight of thoroughbred racehorses can fluctuate significantly depending on the amount of work that they are doing, how much they have been fed, and how frequently they are fed.

Thoroughbreds with a muscular frame and a lot of built up musculature, tend to weigh more. They will also typically weigh more if they are male than female horses since males grow faster and get bigger than females.

It is not necessary for a thoroughbred to be over the average weight of 1200 pounds to be able to race. If they are very fit and healthy, thoroughbreds that weigh less than the average weight are also very capable of winning races.

Average Horse Weights

A thoroughbred is a horse that is descended from ancestors who were registered with the Jockey Club of England. They have long, elegant legs and large hearts, making them a popular choice in horse racing. Thoroughbreds are known for being swift, and have a reputation for stamina. The average weight for a male foaled in 2016 was 1,042 pounds, while the average female was 881 pounds. The maximum weight for foaled male thoroughbreds in the previous year was 1,292, while the maximum weight for foaled female thoroughbreds in the previous year was 1,080.

The thoroughbred racing season generally runs from January until October. During the racing season, the thoroughbreds will be worked extensively between races to keep them in peak condition. Horses are rotated throughout the day, with some horses being let out of a stall into a short exercise and then returned and others being worked during breakfast. All thoroughbreds require a proper diet and exercise regimen, so that they can build the muscle necessary for racing. Both male and female thoroughbreds build muscle mass through exercise. The male thoroughbreds build muscle mass through strenuous exercise, while the female thoroughbreds build muscle mass without significantly increasing their weight.

Thoroughbred Weight: Different Thoroughbred Careers

The Thoroughbred horse is built to perform in several different disciplines. This means that at two years of age, Thoroughbreds vary widely in weight and size. Usually a Thoroughbred horse will average about 1,000 pounds when he is two years old.

The three main racing categories that your racehorse could fall into are:

  • “A” Hunters (lightweight)
  • “B” Jockeys (middleweight to heavyweight)
  • “C” Heavy Weight

A “lightweight” Thoroughbred racehorse will normally need an experienced trainer to train or race. Because a horse that is built for racing will have shorter, slimmer bones.

In general, a Thoroughbred weighing up to 1,300 pounds is considered a lightweight racehorse, and one that weighs between 1,300 and 1,600 pounds is considered a middleweight.

The horse is then categorized according to his frame size, and the weight is decided. Smaller horses are considered smaller frames, while a horse with a larger build is larger framed.

Categories for Weight

Middleweight: 1200 – 1,300 lbs

Heavyweight: 1,300 – 1,600 lbs

Extra-Heavyweight: 1,600+ lbs

Different Diets

Thoroughbred horses are happy eating a wide range of foods, although some of them enjoy the freedom of grazing on grass. Their digestive system is made for consuming the high amount of carbohydrates grass provides. Although some farmers prefer to feed their thoroughbreds a bigger amount of grain to build muscle mass and for faster finishing, grass is a much healthier alternative.

It has also been proven that grass fed thoroughbreds and other horses have a better life expectancy. In fact, it is estimated that the average life span of a grass fed horse stands at 30 years, which is twice as much as grain fed horses.

This is why thoroughbred horse owners who are interested in producing top quality thoroughbreds, which will fetch a lot of money on the market, look into the diet of their thoroughbreds to make sure they are getting quality grazing lands and clean water resources.

Average Racehorse Weight

A thoroughbred racehorse weighs on average about 1,200 pounds.

Average weight for Thoroughbreds can range from 1150 to 1300 pounds for a 2 year old to 1300 to 1500 for an aged horse.

A thoroughbred racehorse is more valuable at the shorter distances. A longer racehorse can be a more valuable racehorse and a jockey is not going to win a race with a slower horse.

Average Thoroughbred Weight

The average Thoroughbred weight in the US depends on several factors, including the type of racing the horse has done and is now retired from, and the age.

On average, a Thoroughbred is between 15 and 17 hands high, which is considered to be small. Some larger breeds can be up to 18 hands. The eyes of a Thoroughbred are commonly brown but they can also be blue or amber. The coat tends to be quite shiny with some grey areas including on the face, ears and lower legs.

For male Thoroughbreds, the average race weight is up to 560 pounds, while female Thoroughbreds are usually around 515 to 535 lbs.

If the horse races, or is kept as a stallion, he will be heavier in weight than the standard weight. Depending on the type of games he plays, size and diet, an average adult Thoroughbred weight could be up to 650 lbs.


These are the answers to my 10 most frequently asked pet questions. Thank you for taking the time to read these answers. I hope you found them helpful. This guide is not a substitute for professional and personal advice. Please consult with your veterinarian if you have specific doubts and questions. And as always, good luck with your pet!

I sincerely hope that the information provided on this page was useful, interesting and fun. If you have any suggestions/opinions on how to make this page better, please let me know! I appreciate any feedback.

Thank You for Visiting 10 Most Frequently Asked Questions

You may also want to read:

  • 10 Most Common Dog Questions and Answers
  • 10 answers to the most frequently asked questions about Siamese Cats
  • 10 Pet Behavior Questions and Answers I Get Most Often
  • 10 Great Places To Take Your Pet In Plano TX
  • 10 Ways To Get Rid of Mice Without Traps
  • 10 Ways to Stop Dogs From Eating Cat Poop
  • 10 Best Dog Harnesses for Walking Your Dogs in 2016
  • 10 Tips to Prevent Fleas and Ticks
  • 10 Signs Your Dog Is Stressed
  • 10 Simple Ways to Stop Your Cat from Peeing on your Furniture