Track your rides and runs via your iPhone, Android or GPS device, analyze your performance, and compare with friends.
San Francisco, Californiahttp://bit.ly/1SJ6VLB
Track your training progress, find training runs leading up to the race, and connect with fellow Endurance Challenge runners!
Located in the visually stunning Marin Headlands, The North Face Endurance Challenge Championship course engages runners with both scenic views and drastic elevation change.
Saturday Races include: 50 Mile, 50K, Marathon Relay, and Marathon
Sunday Races include: Half Marathon, 10k, and 5k
Learn more about The North Face #ECSCA: http://challenge.thenorthface.comJoin Club