Night and Day Challenge in SF

Night & Day is a foot, bike, or duathlon race that brings you to nooks and crannies of a city you’ve never seen before. Sixty point-valued checkpoints are placed throughout Seattle and San Francisco. Visit checkpoints in any order you choose for 3, 7, or 16 hours. Teams returning with the most points are the winners!

Checkpoints will be located at landmarks both famous and obscure, as well as scenic parks and wild places. Your route will give you a tour of your chosen city unlike any other.

http://www.nightanddaychallenge.com/