This is a past event.

O2X Summit Challenge

When: Sat., Sept. 13, 8 a.m. and Sun., Sept. 14, 8 a.m. 2014

Runners tackle varied terrain and elevation gains on challenging courses to the summit of Mount Ellen.

Sugarbush Resort

102 Forrest Dr., Warren Mad River Valley/Waterbury

sugarbush.com

These community event listings are sponsored by the WaterWheel Foundation, a project of the Vermont band Phish.