Course Map and Profile

The 50 mile course will have approximately 11,130ft of vertical gain.

*The 2017 Quad Rock route was modified slightly to detour around a section of the Spring Creek trail closed for nesting raptors. We expect to use this same route in 2018 and will update our final maps and directions later in April.

The first section of the race from Arthur’s to Towers will go directly up Sawmill, Loggers, and Carey Springs to Towers eliminating 1 mile from the Stout trail. The section from Towers to Horsetooth down the Spring Creek trail will take a left onto Herrington and right onto Stout to add a 1 mile detour around the trail closure back to the Horsetooth Falls trail. Mileage will be exactly the same as the usual course and vertical difference will be negligible.  

Click here for a detailed course description and directions.

Click here for aid station locations and aid, drop bag, and crew access info.

The first 25 mile loop will run clockwise from Soldier Canyon. 50 mile runners will run a second loop in the opposite direction and will finish on the East Valley trail.

Park Map

Click to download and print a PDF map

Interactive Map

Elevation Profile

50 Mile

25 Mile

Park Trail Maps