
The Maryland Thoroughbred Horsemen’s Association would like to remind all horsemen that the Horseracing Integrity and Safety Authority (HISA) horseshoe and traction device rules remain in full effect and are being enforced.
These regulations apply during both training and racing and are an important component of HISA’s national safety standards.
Under HISA Rule 2010, a “traction device” is defined as any device that extends beyond the ground surface of the horseshoe. This includes, but is not limited to, inserts, wear plates, rims, toe grabs, bends, jar calks, stickers, ice nails, frost nails, and mud nails.
Rule 2276 outlines surface-specific restrictions:
Forelimbs: Traction devices are prohibited, except full rims 2 millimeters or less in height.
Hindlimbs: Traction devices are prohibited, except full rims measuring 4 millimeters or less, or toe grabs measuring 4 millimeters or less.
Traction devices are prohibited on both forelimbs and hindlimbs, except full rims measuring 2 millimeters or less.
Traction devices are prohibited on both forelimbs and hindlimbs.
These standards became effective July 8, 2024.
The primary difference between a full rim 2 mm race plate and a toe grab (specifically 2-4 mm, as often compared) lies in how they provide traction and the resulting stress placed on the horse’s limbs. A full rim offers traction while allowing a flatter foot landing, while a toe grab acts like a cleat, raising the toe and increasing the risk of injury. A full rim 2mm is the entire circumference of the shoe.
Compliance is the responsibility of the trainer and connections. Horses that compete with prohibited shoes or traction devices run the risk of being declared ineligible by the Stewards.
Such a ruling can have significant consequences, including:
• Voiding of claims
• Loss of purse money
• Additional regulatory action
The MTHA strongly urges all trainers to review the HISA rules carefully and work closely with their farriers to ensure all horses are properly shod prior to entry.
HISA previously amended portions of the hind shoe regulations following discussions with horsemen. Those interested in further background on the amendments can review the BloodHorse article summarizing the changes:
Maryland horsemen are encouraged to take these requirements seriously. Avoidable compliance issues can have meaningful financial and regulatory consequences. If there are questions regarding shoe specifications, trainers should consult the Racing Office or appropriate regulatory officials before entering to race.
The MTHA remains committed to ensuring that our membership is fully informed and positioned for success under the national HISA framework.




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