Trailrace.co
Find your race Upcoming Find a Qualifier
Search Dashboard Saved Races Calendar
Trailrace.co

Helping the trail running community discover, plan for, and thrive at the world's best trail races.

Find Races

  • Search all trail races
  • Explore collections
  • Race series
  • Race qualifiers
  • Trail running glossary

Races by Location

  • Colorado trail races
  • California trail races
  • Utah trail races
  • Arizona trail races
  • Washington trail races
  • All US trail races

Lottery Odds

  • Western States 100
  • Hardrock 100
  • High Lonesome 100
  • UTMB
  • All calculators

Company

  • About
  • Roadmap
  • Terms of service
  • Privacy policy

Feedback

  • Send Feedback
  • Feature Requests
  • Report a Bug

© 2026 Trailrace.co. All rights reserved.

Built on bad decisions in Boulder, CO.

Sheep Mountain Trail Runs 50k

Basic Listing
  1. Human Potential Running Series
  2. 2027 Edition

A 33-mile high-altitude loop through South Park at 10,500 feet—no crew, no pacers, no excuses

Explore the Course
Interactive map with aid stations, elevation & weather
DirectionsExplore
Registration OpensDecember 01, 2026
DeadlineAugust 03, 2027
Opens December 01, 2026

Nearby races

Other trail races within 34 miles

Course map for Sheep Mountain Trail Runs 50 Mile

Sheep Mountain Trail Runs 50 Mile

50 Mile
Fairplay, CO, US
Aug 7, 2027
52.51 miles
8,530 ft gain
Loop
Crew
Pacers
Dropbags
Course map for Silverheels Trail Runs 10 Mile

Silverheels Trail Runs 10 Mile

10M
Como, CO, US
Jul 10, 2027
10.81 miles
1,610 ft gain
Loop
9 mi away
Course map for Leadville Trail 100 Run
Lottery

Leadville Trail 100 Run

100 Mile
Leadville, CO, US
Aug 22, 2026
100 miles
13,550 ft gain
Out and Back
Crew
Pacers
Dropbags
16 mi away
Course map for Silver Rush 50 Run

Silver Rush 50 Run

50 Mile
Leadville, CO, US
Jul 11, 2026
48.4 miles
8,000 ft gain
Out and Back
Crew
Dropbags
17 mi away
Course map for Collegiate Peaks Trail Run 50 Mile

Collegiate Peaks Trail Run 50 Mile

50 Mile
Buena Vista, CO, US
May 2, 2026
50.6 miles
7,000 ft gain
Multiple Loops
Dropbags
27 mi away
Course map for West Line Winder 50K

West Line Winder 50K

50K
Buena Vista, CO, US
Sep 26, 2026
30.57 miles
4,300 ft gain
Loop
Crew
Dropbags
27 mi away
Course map for High Lonesome 100
Lottery
Qualifier Req
Service Req

High Lonesome 100

100 Mile
Nathrop, CO, US
Jul 16, 2027
100 miles
23,240 ft gain
Loop
Crew
Pacers
Dropbags
34 mi away
Course map for Sawatch Ascent 50K

Sawatch Ascent 50K

50K
Buena Vista, CO, US
Sep 27, 2026
33 miles
7,000 ft gain
Lollipop
Crew
Dropbags
34 mi away
All trail races in Colorado→
August 07, 2027
Saturday 6:00am MDT start
Fairplay, CO
United States
33 miles
Loop Course
5,250 ft
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Challenging
Some ultra experience recommended
Links
WebsiteInstagramFacebookYouTube
2015
Established
96%
Finish Rate

What Makes It Great

The Sheep Mountain 50k covers 33 miles through the South Park Valley at an average elevation of 10,500 feet, traversing the most scenic portions of the course—including a loop past Brown's Pass and up to Pasture—without extending into the full 52.5-mile lollipop. The same 10:00 PM cutoff as the 50-Mile gives runners ample time, but the relentless high altitude and potential for afternoon monsoons keep this firmly challenging. No crew or pacers are permitted; drop bags are available at Horseshoe and Pasture aid stations.

Difficulty

Intermediate
6/10

Some ultra experience recommended

High Altitude
Steep Climbing
Variable Weather
Night Running

Race Highlights

10,500 ft average elevation
Entire 33-mile course runs through high-alpine South Park terrain above 10,000 feet
Longer than a standard 50k
At 33 miles the course runs 2 miles longer than a traditional 50k, adding extra challenge
Self-reliant format
No crew or pacers permitted; just you, the high alpine, and drop bags at two aid station hubs

Finish Awards

Finisher's Medal
All finishers receive a unique finisher's medal.

Sheep Mountain Trail Runs 50k

Fairplay, CO, United StatesAugust 07, 2027

August 07, 2027

Sheep Mountain Trail Runs 50k is a loop trail race in Fairplay, CO, United States, held on August 07, 2027. The course covers 33 miles, climbs 5,250 ft, and has a 16h cutoff.

Course map for Sheep Mountain Trail Runs 50k
DistDistance33 mi
GainElevation Gain5,250 ft
LimitCutoff16 h
High AltitudeSteep ClimbingVariable WeatherNight Running

Entry Timeline

Registration OpensDecember 01, 2026
Registration DeadlineAugust 03, 2027
Race DayAugust 07, 2027

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.
33.0 mi
Distance
Loop
Route
16h
Cutoff Time
10,607 ft
Average Elevation
5,250 ft
Total Ascent
5,250 ft
Total Descent
11,742 ft
High Point
9,918 ft
Low Point
Explore Course
Course map for Sheep Mountain Trail Runs 50k
Launch Course Explorer

Aid Stations & Cutoffs

LocationMileElevationCutoffDrop bags
Start
Start
0.09,918 ft—
Horseshoe 1
Aid Station
7.110,571 ft—Drop Bags
Browns Pass 1
Aid Station
13.911,421 ft—
Pasture
Aid Station
16.610,112 ft
8h2:00 PM
Drop Bags
Horseshoe 2
Aid Station
25.910,571 ft
12h30m6:30 PM
Drop Bags
Fox Tail
Aid Station
28.910,220 ft—
Finish
Finish
33.09,918 ft
16h10:00 PM

Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.

Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.

On-Site Camping Available

HPRS-hosted camping at the race venue. Tent camping requires reservation through RunSignUp. Camper vans, rooftop tents, trailers, and vehicle sleeping are free. Nearby alternatives include USFS dispersed camping, local motels/hotels, Air BnBs, and an RV park. The Elf-Haus Air BnB offers 10% off when mentioning HPRS.

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

No Crew Allowed
Weather
High Altitude

Course averages approximately 10,500 feet. Altitude acclimatization is recommended before race day.

Lightning/Thunderstorm Risk

August monsoon season brings afternoon thunderstorms and lightning to exposed Colorado mountain terrain.

Gear Rules

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Race Reports

Race Report: The Sheep Mountain 50k
By Munger Runs • 2021

Videos from other Sheep Mountain Trail Runs events

Video thumbnail: Sheep Mountain Trail Runs Course Preview
Sheep Mountain Trail Runs Course Preview
Sheep Mountain Trail Runs 50 Mile
Human Potential Running Series•2025

Race reports from other Sheep Mountain Trail Runs events

Oh, Sheep (Mountain 50)Sheep Mountain Trail Runs 50 Mile
By Jake Norton • 2023
Sheep Mountain: From DFL to ADFL (Almost DFL)Sheep Mountain Trail Runs 50 Mile
By Ultra Running Magazine • 2022

Reviews

to write a review.

No reviews for this event yet. Be the first to share your experience!

Opens December 01, 2026