Starting downtown at Single Speed Brewing and still 90% trail and single-track, The Runner's Flat 50K pulls it all together for you!

The course quickly hits the dirt for 15.5 mile loops on beautiful, fast singletrack along the Cedar River bottom and now includes a ferry ride via canoe across scenic Brinker Lake.

Three aid stations per lap staffed by the best volunteers in the Midwest will keep you fueled and hydrated.


50 KM View course top times

Date Finishers Top Result Top Result (F)
10/13/18 28 3:35:12 4:27:18
10/14/17 37 3:10:21 3:59:26
10/08/16 40 3:22:36 4:34:48
10/10/15 49 3:13:53 4:00:41
10/11/14 37 3:21:25 3:54:17
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

Tommyknocker 12-Hour & Mine Shaft Half

  • May 15, 2021
  • Golden, CO
12 Hours