Northern California's Dipsea is the oldest trail race in these United of States. It started in 1905 and now falls on the second Sunday in June each year, which means the 2012 version happened just a few days ago. The Dipsea is a 7.4 mile course from Mill Valley to Stinson Beach. Not a bad place for a jog...Jack Kirk, known as the "Dipsea Demon," ran that race 67 consecutive times before passing away in 2007 at the age of 100. He won the thing twice and ran his last race when he was 95 years young. And the kicker no pun intended) was that he would show up in long pants, a long sleeve collared shirt (see photo above) and boat shoes. Genius.Watch a short documentary about Jack here.