O2X Summit Challenge« All Events September 26, 2014 - September 28, 2014
The second race in O2X's series of four base-to-peak competitions, the Sunday River Challenge offers a new and unforgettable opportunity to experience physical and mental growth - all fostered in a spirit of environmental awareness and sustainable living. Two routes of varying physical challenge and elevation gain take athletes up some of Sunday River's most rugged and rewarding terrain. Along the way runners will navigate natural obstacles before finishing the course at the summit. For more information and to register, visit o2x.com.