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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


The Quarter Horse Ontario Sires Stakes (QH – OSS) is a series of races specifically for horses sired by a stallion standing in Ontario.  Since 2008 the QH – OSS program has been promoting the breeding of quality Quarter Horses in Ontario and providing economic incentives to breed, buy and race horses in the province.
The Quarter Horse Ontario Sires Stakes race program includes:
August 26, 2018      – Ontario Sires Stakes Futurity
September 2, 2018 – Ontario Sires Stakes Derby
September 2, 2018 – Ontario Sires Stakes Maturity
When you come out to watch and wager on QH – OSS races you are helping to support local breeders, owners, trainers, grooms, vets, blacksmiths and more!
The Quarter Horse Ontario Sires Stakes Program is administered by Ontario Racing.


2018 Ontario Sires Stakes Schedule