Horse · United States
Standardbred
also: Standie / Harness horse
Equiteca Editorial · Reviewed 2026-08-30 · 2 sources
The Standardbred is the world's premier harness-racing breed, named for the speed 'standard' a horse once had to meet over a mile to earn registration. It traces to the Thoroughbred Messenger, imported in 1788, and above all to the foundation sire Hambletonian 10, and it resembles a longer, heavier-bodied Thoroughbred. The United States Trotting Association, founded in 1939, is the sole issuer of registration papers, which a horse must hold by law before it can race in North America. Most stand 15 to 16 hands and weigh roughly 360 to 455 kg, racing at either the trot or the pace. Off the track the breed is calm, sensible, and increasingly popular as a retrained riding and driving horse.
At a glance
Averages about 15.2 hands with a longer body than the Thoroughbred it descends from.
Temperament
Suited to
On price
Retired or off-the-track Standardbreds are among the most affordable riding prospects, often 1,000 to 4,000 USD; started riding horses and proven race or breeding stock run higher.
Care needs
Standardbreds are generally sound, hardy horses that do well on forage with routine hoof care every 6 to 8 weeks and a standard vaccination and deworming schedule. A horse coming straight off the track needs a let-down period and patient retraining from harness to saddle, much like an off-track Thoroughbred. Because many raced hard as youngsters, a pre-purchase exam of the legs and feet is worth the cost.
Common health issues
Generally sound and hardy
The breed is known for durability and an even temperament, without a signature crippling genetic disorder. Most care comes down to sensible feeding, dental work, and routine veterinary and farrier visits.
Retraining from a racing career
Standardbreds retire from harness racing sound but conditioned to pull a sulky at trot or pace, so they need a let-down period and patient work to rebalance under saddle and, for pacers, to develop a comfortable canter. The process mirrors retraining an off-track Thoroughbred.
Racing-related wear
Horses that raced hard as two- and three-year-olds can carry old leg and hoof strain. A pre-purchase exam of the lower limbs and feet flags any past injury before a second career under saddle.
Colors
bay, brown, black, chestnut, gray, roan
Questions people ask
What is the difference between a trotter and a pacer?
Both are Standardbreds and both race in harness, but they move differently. A trotter moves diagonal legs together; a pacer moves the two legs on the same side together, usually with light hobbles. Pacers are slightly faster and make up most of North American harness racing.
Do Standardbreds make good riding horses?
Yes, once retrained. Off the track they are calm, sensible, and forgiving, which suits trail, pleasure driving, and low-level competition. Pacers can take extra work to develop a smooth canter, but many settle into fine all-around riding horses.
How much does a Standardbred cost?
Retired and off-the-track Standardbreds are among the most affordable riding prospects, often 1,000 to 4,000 USD, and adoption programs place many for even less. Started riding horses and proven race or breeding stock cost more.
How fast is a Standardbred?
The breed is the fastest harness horse in the world, covering a mile in well under two minutes at the trot or pace. That speed at a controlled gait, rather than a flat-out gallop, is what defines the breed.
Keep reading
Sources
Every figure on this page traces to one of these. We cite registries, associations, government and veterinary bodies, and published cost surveys - not other blogs.
- [1]About the U.S. Trotting Association- United States Trotting Association2026registryThe USTA, founded 1939, is the sole issuer of Standardbred registration papers, which a horse must hold by law before racing in North America; the breed registry and rulemaking body for the sport.
- [2]Standardbred Horses- Oklahoma State University, Breeds of LivestockgovThe Standardbred is the fastest harness horse, averages 15.2 hands and 800 to 1000 pounds, traces to Messenger and foundation sire Hambletonian 10, and races at the trot or pace.