Long considered the greatest accomplishment in horse racing; capturing the Kentucky Derby, Preakness Stakes and Belmont Stakes is a feat that has eluded countless horses over the past 100 years. From Sir Barton in 1919 to American Pharaoh in 2015, only twelve have won the crown. Today, the five-week circuit through Louisville, Baltimore and New York City continues to be a thrill ride for horses, horsemen and race fans alike.