How Much Does a Racehorse Weigh In Kg & Lbs?

Horse racing is one of the most popular sports in the world.

Even if you don’t know much about horse racing, you’ve probably asked this question before: How much does a racehorse weigh?

This blog post provides some great information on what racehorses weigh in kg and pounds.  So, let’s get started.

How Much Weighs a Horse?

A horse can weigh anything from 900 to 1,500 pounds on average (400 and 700 kg). While carriage and draft horses typically weigh 1,500–2,000 pounds, most riding horses fall in the 800-1,100-pound weight range.

However, some horses weigh considerably less than the typical horse weight for the majority of breeds. For instance, miniature horses can be as light as 200 pounds (90 kg), which is only slightly heavier than a large dog.

What Horse is the Heaviest?

Sampson, also known as Mammoth, a Shire horse, was the heaviest horse in the world, weighing an incredible 3,360 lbs (1,524 kg). Sampson stands a stunning 21.25 hands tall, making him the tallest horse ever (7 ft 2.5in).

This enormous horse was born in Bedfordshire, England, in 1846. Sampson’s extraordinary height, which earned him the moniker Mammoth, was reportedly reached at the age of four, according to his owner Thomas Cleaver.

Thumbelina, the lightest horse ever, is at the other end of the range. This featherlight tiny was barely 57 pounds when fully grown (25 kg). She wasn’t the smallest foal in history, though; that distinction belongs to Einstein, whose newborn weight was just 6 pounds (2.7 kg).

Common Horse Breeds Weight Chart

The chart below shows the weight and height range of common horse breeds:

American Quarter Horse455-590 kg
Andalusian545-590 kg
Appaloosa455-590 kg
Arabian410-500 kg
Clydesdale725-815 kg
Dutch Warmblood545-590 kg
Gypsy Vanner620-750 kg
Morgan410-545 kg
American Standardbred545-600 kg
Thoroughbred455-590 kg

How to Identify a Racehorse

Horses with a light, athletic build are racehorses. They are well-muscled and renowned for their quickness, strength, and stamina. The majority of racehorse breeds stand between 15 and 16 hands tall and weigh about 1,000 pounds on average, with Thoroughbreds being the most often used racing breed.

Other Horse Racing

Many other breeds also participate in racing. The majority continue the custom of honoring their particular breed of horse. Horse racing has been a common activity for a very long time.
In Vermont, Morgan horses participate in trotting and galloping competitions every year to honor the breed’s history of adaptability. The original Morgan stallion, Figure, was able to outrun, out trot, and output any horse he faced. Standing between 14 and 16 hands and weighing between 850 and 1000 pounds, Morgan horses are graceful creatures.

The Nez Perce developed Appaloosas, which are now widely used in the North American racing industry. Appaloosa racing is held in numerous states across America. Appaloosas reach between 14 and 16 hands tall and weigh between 900 and 1,000 pounds. They are distinguished by their stunning spotted coats.
The longest and most difficult horse race is held in Mongolia, covering an amazing 621 kilometers over difficult terrain. The Mongol Derby celebrates the long-standing history of racing Mongolian horses. Standing at 12-14 hands and weighing in at between 600-800 pounds, Mongolian horses are compact and hardy creatures that are renowned for their endurance.

Average Weight of a Racehorse

BreedWeight in lbs and kg
Thoroughbreds1,100 lbs (498 kg)
Quarter Horses1,000 lbs (453 kg)
Standardbreds1,000 lbs (453 kg)
Arabians900 lbs (408 kg)


A Thoroughbred is typically a 1,000 to 1100-pound horse. Factors that can influence their weight include feed consumption and exercise habits while breeding age also comes into play for these majestic animals who live up to 25 years on average!

It is often said that Thoroughbred racehorses at the beginning of their careers are smaller than they will be later. This may seem like a strange fact, but there’s actually logic behind it! A horse in its early years finds itself on an upswing with all aspects related to weight development; meaning you can expect more growth spurt activity before maturity sets in for good (or bad).

However as time progresses and these horses grow older- which brings us back around again -their average weights change dramatically based on any number of factors including age diet hours spent exercising or racing training status among others.

The Thoroughbred is a smaller racehorse breed with long legs and broad chests. They are known for their muscular build that makes them ideal to drive races at high speeds over a distance.

Racing Thoroughbreds tend towards being slightly lighter than other breeds because they have less muscle mass on average which would make them slower if running longer distances.

Quarter Horses

A horse’s age, gender, and hoof size all have an impact on the weight it gains. Some horses are larger than others due to differences in feed types or maturity as well as breed type – but not every animal has these factors!

A quarter horse can weigh anywhere from 900 lbs. to 1,100lbs, but the average weight for one is about 950 pounds.

A quarter race horse’s height is usually measured in hands, with the average being 12 to 15. And a hand equals four inches.


Although their height varies a little more from 14 to 17 hands, the Standardbred is popular for racing in the Western world.

They also have a longer body with strong shoulders and a sturdy build that enables them to run faster than other breeds on occasion – although it still does not make them invincible!

The weight can vary anywhere between 900 pounds up to 1,100 pounds depending on what you’re looking at when purchasing one.


Arabians are known for their endurance, not speed. They can weigh as much as 1,000 pounds and still be fast enough to win races!

The average weight of an adult Arabian horse is 800-1,000 lbs.

Racing Arabian’s aren’t very common in America but instead, they’re more prevalent down under where racing lasts longer than other places that have shorter tracks/days so horses will need a strong build with stamina because these animals don’t rely just on horsepower as we do here.


How heavy do you have to be to ride a horse?

Horses can comfortably carry a weight that’s 20% of their own, which means if you weigh 250 pounds then the perfect horse should be around 1,250lbs. They need to have good balance and muscle control in order for this rule to work properly!

How much weight can a horse lose in a race?

The average horse can lose up to 5% of his body weight in one mile. For the Thoroughbred, this equates to more than 50 lbs – most are fluid!

What does weight for age mean in horse racing?

Weight for age is a way to compensate younger horses and enable them to compete with older counterparts. It allows these less mature animals the same chance at success as their elders, by giving an allowance based on how they perform during races or shows.


Racehorses are a type of horse that is uniquely suited for racing. They have a number of qualities that make them great race horses, including their lightweight and athleticism.

Most breeds stand around 15-16 hands tall and weigh about 1,000 pounds with Thoroughbreds being the most popular breed used in racing today.