Gnar Runners

Horsetooth RockGnar Runners events are designed to promote enthusiasm and passion for the sport of mountain, trail and ultrarunning in and around the beautiful mountains of Northern Colorado. 

Whether you are leading the charge at the front of the field, playing host in the middle of the pack or chasing course cut-offs, our dirt-based races are geared towards helping you achieve your off-road running goals in stunning outdoor environments.

While we seek to create challenging courses on as much gnar-filled terrain as we can reasonably find, we also guarantee impeccably marked courses, bountiful aid stations and a post-race atmosphere to remember.

Be gnarful out there!

Recent Posts

Gnar 2021 – Race Dates Set

We’re excited to announce dates for our 2021 Gnar Trail Series.

While there’s still uncertainty surrounding the COVID-19 pandemic, our experience successfully holding safe and fun races in 2020 gives us full confidence moving forward.

In addition to our core races, keep your eyes peeled for additional announcements, as we hope to bring some tempting new offerings to our calendar next year!

Dates for 2021 Trail Races

Registration will open on December 15, 2020.

  1. Blue Sky Trail Marathon – Canceled Leave a reply
  2. 2020 Black Squirrel Wrap – Fire, Snow & Course Records 2 Replies
  3. Runners overcome tough conditions at the 2020 Quad Rock Trail Races Leave a reply
  4. Black Squirrel and Blue Sky are ON! Leave a reply
  5. A Recap of the 2020 Never Summer 100km & 60km 1 Reply