OTTB is an acronym for Off-Track Thoroughbred: a registered Thoroughbred horse that has retired from racing and is being transitioned to a new career or home. The term is widely used in equine rescue, retraining, and competitive circles in North America, the United Kingdom, and Australia, wherever Thoroughbred racing operates at scale.
The United States retires approximately 25,000 racehorses per year. Most are OTTBs, though the category also includes horses that never raced (failed-to-start, breeding stock) but were raised and trained in a racing environment. OTTBs typically become available between ages three and seven, as the prime racing years end, though some older horses retire after longer careers at smaller tracks.
Why OTTBs Are Valued
A sound, well-conformed OTTB between four and eight years old represents substantial athletic value: it is already broke to ride, accustomed to bathing, clipping, shoeing, trailering, and handling, and has logged significant cardiovascular conditioning. Its price at the point of retirement, often $500 to $3,000, reflects the volume of horses entering the market, not their intrinsic worth as athletes. Many OTTBs go on to successful second careers in three-day eventing, show jumping, dressage, fox hunting, polo, and trail riding. The Retired Racehorse Project's Thoroughbred Makeover, held annually at the Kentucky Horse Park, showcases OTTBs competing across 18 disciplines after a 10-month retraining window.
Retraining Considerations
The transition from racing to a pleasure or sport horse career requires adjustment. OTTBs have been conditioned to gallop in company and to respond to race-specific cues. They must learn to accept contact and collection, slow gaits for trail or flatwork, and a calmer stable routine. Most experienced OTTB adopters describe a 60-to-90-day settling period before the horse stabilizes in its new environment. Organizations including the Thoroughbred Aftercare Alliance (TAA), CANTER USA, and New Vocations vet, retrain, and place OTTBs. See also the full Thoroughbred breed profile for health considerations specific to retired racehorses.
Further Reading: Thoroughbred Aftercare Alliance (TAA): accrediting body for OTTB adoption organizations. Retired Racehorse Project.