You have three distances to choose from: 10k, 25k, and 50k, plus a free 1 mile fun run for kids age 14 and under. We’ll have cider and donuts and more seasonally appropriate food. The courses are the same beautiful and challenging 10k and 25k loops you may know from the winter and spring race. The 50k is 2 loops of the 25k.

Upcoming Races

Oct 3 2020
50 KM
Multiple Loop Course
3 Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts


50 KM View course top times

Date Finishers Top Result Top Result (F)
10/05/19 24 4:13:43 5:59:42
10/06/18 10 4:05:27 5:21:26
10/07/17 30 4:33:19 5:31:20
10/22/16 20 4:02:33 4:54:45
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.

More events by Switchback Endurance

Earth Day 50K
  • Apr 18, 2020
  • Crystal Lake, IL
50 KM