In February 1923, Jockey Frank Hayes suffered a fatal heart attack while riding a race at Belmont Park in New York City.
As dead as he was, he remained on the saddle to jump the final fence and cross the finish line in the first place.
Bonus fact: The average horse speed in short distance races (up to a quarter-mile) is 33 mph, and reaches picks of 56mph.
In mid-distance races (up to half a mile) such as the famous Kentucky derby – the average speed is about 37 mph.
In long-distance competitions and hurdles – such as the Grand National race – the average speed is about 28 mph.