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Ontario Sires Stakes

Ontario Sires Stakes


In 1974, the Ontario Sires Stakes Program (OSS) was established to promote Ontario’s breeding of world class Standardbred horses and provide economic incentive for those interested in breeding, training, buying and racing horses in Ontario.

The Ontario Sires Stakes Program was initiated to improve the quality of the Ontario race horse, and to support and encourage investment in the province’s important horse racing and breeding sector. The OSS has evolved into one of the leading sire stakes programs in North America. You can watch the very bestOntario Sired horses in action at racetracks across Ontario.

Below you will find more information on the Ontario Sires Stakes and the complete schedule of races.

Ontario Sires Stakes Schedules

Did you know some of the world’s finest horses are right here in your own backyard? The OSS program is well known for consistently producing and showcasing world class race horses. Don’t miss these soon-to-be renown hometown horses compete for the honour of becoming Sires Stakes Champions.

Information & Highlights

The Ontario Sires Stakes program consists of a series of races for two and three-year-old trotters and pacers held at tracks across Ontario from May to October. The racing program is two-tiered: a Grassroots Series and a Gold Series. The stallions themselves are the foundation of the OSS program and to be eligible they must be owned or leased by an Ontario resident and stand in the province for his entire breeding season. Only foals resulting from a mating between a mare in the Northern Hemisphere and a stallion registered for the OSS program are eligible for nomination to the Ontario Sires Stakes.

Complete Ontario Sires Stakes Program information, including deadlines, season standings, race results and notices may be found at