The North Face Ultra Challenge

Push your limits and run 50k in two days.

Challenge Ended: December 2, 2012
The North Face is challenging you to run 50k during the weekend of The North Face Endurance Challenge Championships in San Francisco, CA.

The North Face Endurance Challenge Series evolved out of Dean Karnazes’ quest to run 50 marathons in 50 states in 50 consecutive days - The North Face Endurance 50. It was started in 2007 and has since become one of the premier Trail and Road Running race series in the United States.

Even if you can't be on-site in San Francisco pounding out the kilometers, you can still take part in the Championship by participating in this Challenge. Spread it out over two days, or join the 50k race competitors on Saturday and do the entire distance in one run.

Find your comfort zone and push right through!
  • 1,835
  • 23,695
    Total Kilometers Run
The North Face Ultra Challenge logo