10km runners hit some planks on the Big Red Trail

Sign up at UltraSignup.com


CJF helps create good sustainable jobs for disadvantaged young adults in Cambodia through several programs.  To support the good work they do, 10% of race profits will be donated to this 501c3 non-profit.

The 10KM course (NEW in 2021)

Sylo Inn / Ramada is our Partner hotel.  5 blocks from the start.

A downhill road 1/2 marathon and 5km through an amazing abandoned canyon.  Also runs through the Fremont Indian State Park.  Located about 20 minutes South of Richfield..

Trail 84 (aka the Roller Coaster)

The 25KM course

Course Photos

Gary's Shoes provides gift certificates to the male and female winners of each distance

Hammer provides endurance products for all participating athletes.

The 2024 Crimson Canyons Ultra, with route options at 50 Mile, 25km & 10km, will be run on Saturday, September 21, 2024.  β€‹

No matter the distance run, pristine red rock canyons and primal trails await! This race links several canyons, dry washes, remote sections of the Paiute ATV Trail system, and the brand new Pahvant Mountain Bike Trail System, into a unique experience. Run up a slot-like red rock canyon, trek atop a packed natural clay fin under colorful hills, power up and speed down remote trails, and catch great vistas along ridgelines.

The race is located in Richfield, Utah, just a 2 hour 35 minute drive South of the SLC International Airport.

Elevation gains & time limits

  • 10km (6.2 miles) 1220 feet / 372 meters (time limit 4 hours)
  • 25km (16.6 miles).  3104 feet / 946 meters (time limit 8 hours)
  • 50 Miles (80km) 8510 feet / 2594 (time limit 18 hours)
  • ​For more detail, see the overview maps below, or on the "Course" page.

The Pahvant MTB Trail System has 100+ miles of incredible single track trails, created between 2019 and 2022.  The bike trails runners hit include:  Faulty, One-in-a-Pinion, Kiln-It, Cairn-age, and Tank Run.  The 50 miler catches all of the above, after the Spinal Tap trail.  The 10km catches the Big Red & Kiln-it trails up, and then follows the 25km route down the iconic Cairn-age trail, plus the Tank Run trail.  

Event photos from previous years:

Preview Videos 

The boulder in Cathedral Canyon before someone literally blew it up in 2022

Runner submitted photos 2020 (above)


The Spinal Tap Trail 50 Miler elevation Profile

Tooele Trail Racing puts on 4 or 5 great, minimalist trail runs each year.  No shirts, no medals, just come for the love of the trail.

Sevier County Travel Council

One of two obstacles in the unique Cathedral Canyon

​2023 Aid Stations - Crew Points - Drop Bags - Cut-Offs Times

5 minute video of the 2016 preview run

The local Richfield Bottling Plant provides drinks for runners

(Coming: 50 Miler Fly Over)


The Spinal Trap Trail 50 Miler course

The spectacular lands of the Fishlake National Forest and their permission makes this race possible

Preview of Dairy Canyon, Trail 84, and the new Faulty and Cairn-Age Trails.  

10% of race profits are donated to CJF

Come experience the adventure of a lifetime!