Tommyknocker Ultramarathons


May 13, 2023 at 6:00 AM

Tommyknocker Ultramarathons

5700 Pine Ridge Road

Golden CO, 80403


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Entry Fee $40
(Lowest or Early Registration)

Entry Fee 2 $95
(Highest or Late Registration)

Prize Money: yes


  • 13.1M

Type: Trail

Participant Limit: 200

Starting Elevation: 6143

High Point: 7894

Percent of the course on un-paved trails: 100%

First Year of the Event: 2014

Men's Record: 2019 Timmy Parr (37) 2:08:09 - Mine Shaft Half

Masters Men Record: 2019 Clint Steffens (49) 2:09:00

Women's Record: 2018 Joanna Masloski (40) 2:30:00 - Mine Shaft Half

Masters Women Record: 2018 Joanna Masloski (40) 2:30:00


The Tommyknocker Ultras is a one-of-a-kind challenging 12-Hour timed event with spectacular views of Colorado’s Front Range above the Denver Metro Area. The course features double-track and single-track trails with 0.0% pavement. The Mine Shaft Half features a mountain of an out and back course. If you run one race this year, make it Tommyknocker. The Tommyknocker 12-hour event is part race, part carnival and ALL fun. Set in the foothills near Golden, the course is designed by you (in a lottery-style drawing) in a series of loops. The key question is: Which loops will you run during your 12 hour jaunt? And will you have more fun running or playing at the aid station? Come find out.


No photos available.


Past Event Dates

Held on May 13, 2023

Held on May 14, 2022

Held on May 15, 2021

Held on May 09, 2020

Held on Jun 23, 2019

Held on May 19, 2018

Held on May 20, 2017

Held on Sep 10, 2016

Held on Sep 12, 2015

Held on Sep 06, 2014