This trail-running event is designed to provide runners with a variety of perspectives on the lovely and oft-overlooked lower sections of the Merced River Canyon on the outskirts of Yosemite National Park. As this is a Humanity Running project, we will be donating all profits from the event to a local non-profit organization.

The atmosphere of this race will be small, low-key, and although there are fees/awards/aid, we're aiming for a Fatass event feel.

Upcoming Races

Apr 9 2022
44 KM
Mixture Course
5 Aid Stations
8 :00 Cutoff
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts


Date Finishers Top Result (M) Top Result (F)
04/05/20 Race Cancelled
04/07/18 9 3:54:27 4:13:38
04/15/17 18 3:35:47 4:42:28
05/14/16 11 4:29:35 4:37:40
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information. If you see an error, please let us know

Earth Day 50K

  • Apr 16, 2022
  • Crystal Lake, IL
50 KM