The Tommyknocker 12-Hour is a one-of-a-kind challenging 12-Hour timed event, designed by YOU… and tiny colorful balls. Gazing out at the spectacular views of Colorado’s Front Range above the Denver Metro Area, this race will make you laugh, and possibly cry. The course features double-track and single-track trails with ZERO pavement, and an aid station you’ll want to hang around at for hours (we’re that much fun)!

Choose your fate at the Tommyknocker 12-hour event, and remember fate is not always on your side. Sometimes fate has a different plan in store for you. Facing the unknown, and dreading the pastel ping pong balls is part race, part carnival, and ALL fun. Time will take away the unknown and will abate the fear. You will be left with joy, pride, and confidence in your running soul. Face #Adversity, face the unknown, and come to know yourself better through it all.

Upcoming Races

May 11 2019
12 Hours
Hilly, ~2500-7500 feet in 50 miles
Some rocks, root, and/or ruts


Date Distance Total Finishers Top Result Top Result (F)
05/12/18 12 Hours 65 54.64 46.72
05/20/17 12 Hours 35 52.89 47.81
09/10/16 12 Hours 19 42.15 43.58
09/12/15 50 KM 33 5:46:00 5:53:00
09/12/15 100 KM 11 11:37:00 17:37:00
09/06/14 50 KM 26 7:52:00 7:59:00
09/06/14 100 KM 3 17:05:00 13:51:00
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.

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