Fifty marathons in fifty days

Calling it the 50/50/50, American ultra marathon runner Dean Karnazes ran 50 marathons in 50 US states in 50 consecutive days, beginning with the Lewis and Clark Marathon in St. Louis on Sept. 17, 2006, and finishing with the New York City Marathon on Nov. 5, 2006. After finishing the feat, Karnazes decided to run home to San Francisco from New York City.