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Built on bad decisions in Boulder, CO.

Sangre de Cristo Trail Festival 100K

Basic Listing
  1. Human Potential Running Series
  2. 2026 Edition

59 miles of high-altitude Rainbow Trail singletrack in the Sangre de Cristo Mountains

Explore the Course
Interactive map with aid stations, elevation & weather
DirectionsExplore
DeadlineSeptember 22, 2026
Register

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Course map for Sangre de Cristo Trail Festival 100 Mile
Service Req

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Course map for Pikes Peak Marathon

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All trail races in Colorado→
September 26, 2026
Saturday 4:00am MDT start
Westcliffe, CO
United States
59.2 miles
Loop Course
10,740 ft
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Very Challenging
Experienced ultrarunners
Links
WebsiteInstagramFacebookYouTube
2018
Established

What Makes It Great

The Sangre de Cristo 100K covers 59 miles of the Rainbow Trail above 9,000 feet, with nearly 13,000 feet of climbing and a 24-hour window to finish. Runners start alongside the 100-mile field in the pre-dawn darkness from Music Meadows Ranch, navigating exposed ridgelines and forested singletrack as they work toward the 11,421-foot high point at Music Pass. Crew access is limited to the start/finish at Music Meadows; pacers are permitted from mile 29.

Difficulty

Advanced
8/10

Experienced ultrarunners

High Altitude
Technical Terrain
Steep Climbing
Night Running
Variable Weather
Remote Terrain

Finish Awards

Finisher's Award
All finishers receive a unique finisher's award regardless of finishing position.

Sangre de Cristo Trail Festival 100K

Westcliffe, CO, United StatesSeptember 26, 2026

September 26, 2026

Sangre de Cristo Trail Festival 100K is a loop trail race in Westcliffe, CO, United States, held on September 26, 2026. The course covers 59.2 miles, climbs 10,740 ft, and has a 24h cutoff.

Course map for Sangre de Cristo Trail Festival 100K
DistDistance59.2 mi
GainElevation Gain10,740 ft
LimitCutoff24 h
High AltitudeSteep ClimbingNight RunningVariable WeatherRemote Terrain

Entry Timeline

Registration DeadlineSeptember 22, 2026
Race DaySeptember 26, 2026

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.
59.2 mi
Distance
Loop
Route
24h
Cutoff Time
9,708 ft
Average Elevation
10,740 ft
Total Ascent
10,740 ft
Total Descent
10,879 ft
High Point
9,062 ft
Low Point
Explore Course
Course map for Sangre de Cristo Trail Festival 100K
Launch Course Explorer

Aid Stations & Cutoffs

LocationMileElevationCutoffCrewPacersDrop bags
Start
Start
0.09,209 ft—
Music Pass
Landmark
4.311,407 ft—
Music Meadows 1
Aid Station
8.69,219 ft—
Crew
Drop Bags
Colony Creek 1
Aid Station
15.29,833 ft—
Horn Creek 1
Aid Station
24.09,150 ft—
Drop Bags
Venable
Aid Station
29.69,065 ft—
Pacers
Horn Creek 2
Aid Station
35.39,150 ft—
Pacers
Drop Bags
Colony Creek 2
Aid Station
44.09,833 ft—
Music Meadows 2
Aid Station
50.69,219 ft
20h12:00 AM +1
Crew
Pacers
Drop Bags
Music Pass 2
Landmark
54.911,407 ft—
Finish
Finish
59.29,199 ft
24h4:00 AM +1
Crew
Drop Bags

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

Tent camping, camper vans, rooftop tents, and limited space for camping trailers (under 12 feet in length) available at the start/finish area at Greenhorn/Music Meadows Ranch. Vehicle sleeping is free of charge. Tent camping requires a reserved space (purchase via RunSignUp). Nearby lodging in Westcliffe & Silvercliff (15 min), Walsenburg (1h 20m), Salida (1h 25m), and Pueblo (1h 30m).

Crew Access Points

Pacer Rules

  • Pacers may be picked up at Venable (Mile 29.6), Horn Creek 2 (Mile 35.3), or Music Meadows 2 (Mile 50.6). All pacers must sign a waiver, wear a bib, and carry a headlamp.

Crew Rules

  • Crew and spectator support available at the start/finish area (Music Meadows) only. Runners pass through twice. No dedicated crew access at other aid stations for the 100K distance.
Weather
High Altitude

Entire course above 9,000 ft with a high point of 11,421 ft

Rapid Weather Changes

September mountain weather in Colorado can include rain, snow, and afternoon thunderstorms

Gear Rules

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Videos from other Sangre de Cristo Trail Festival events

Video thumbnail: Sangre de Cristo Trail Festival - Course Preview
Sangre de Cristo Trail Festival - Course Preview
Sangre de Cristo Trail Festival 100 Mile
Human Potential Running Series

Race reports from other Sangre de Cristo Trail Festival events

Up, Up and Away! Sangre de Cristo 50 RecapSangre de Cristo Trail Festival 100 Mile
By Jeffrey Jackson • 2023

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Register•September 26, 2026