When American Pharoah ended the 37-year-old Triple Crown drought in 2015, he became just the 12th horse in history to accomplish the feat. There’s no question that every one of those horses was a spectacular runner — but what became of them after the glory? American Pharoah continued to race through the end of his 3-year-old season. In fact, the Kentucky-bred thoroughbred made multiple cross-country trips before finishing his career at the Breeder’s Cup and retiring to stud. After a few months off, American Pharoah began his breeding career earlier this spring. While most Triple Crown winners end up standing at stud, many former winners have done more than just breed, including working for the Army, fund raising and doing a bit of traveling.
http://www.thepostgame.com/what-happened-triple-crown-horses-after-racing