Thoroughbred horse racing
In 2011, Stronach along with his daughter Belinda Stronach, founded The Stronach Group, a horse racing, entertainment and pari-mutuel wagering technology company. The Stronach Group horse racing industry brands include; Santa Anita Park, "The Great Race Place"; Pimlico Race Course, home of the Preakness Stakes; Gulfstream Park, one of Florida's entertainment destination centers, and home to the $16-million Pegasus World Cup Invitational, the world's richest Thoroughbred horse race; Laurel Park; Golden Gate Fields; Portland Meadows; and Rosecroft Raceway. The Stronach Group is in pari-mutuel technology through its subsidiaries AmTote and Xpressbet and is a distributor of horse racing content to audiences through Monarch Content Management. A settlement to the lawsuit launched by Stronach on 1 October 2018, was announced on 13 August 2020. As part of the settlement, Stronach assumes full control and ownership of a stallion and breeding business, all farm operations in North America, and all European assets while Belinda Stronach retains full control of The Stronach Group's horse racing, gaming, real estate and related assets. Stronach no longer plays a role in The Stronach Group.[8]
Among his early successes was his partnership with Nelson Bunker Hunt in the filly Glorious Song who was voted the 1980 Sovereign Award for Canadian Horse of the Year.
His horses have won the Queen's Plate in 1994 and 1997, the Belmont Stakes in 1997, and the Preakness Stakes in 2000. His horse Ghostzapper won several major races including the 2004 Breeders' Cup Classic, was voted the Eclipse Award for Horse of the Year, and named the World's Top Ranked Horse for 2004. In Canada, Stronach and/or his Stronach Stables has won the Sovereign Award for Outstanding Owner nine times. In the United States, he earned the Eclipse Award for Outstanding Owner in 1998, 1999, and 2000. In 2000, he won the Eclipse Award for Outstanding Breeder. He subsequently established Adena Springs Farms which owns horse breeding farms in Kentucky, Florida and Canada and won the Eclipse Award for Outstanding Breeder in 2004, 2005 and 2006.