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Built on bad decisions in Boulder, CO.

San Juan Solstice 50 Mile

Basic Listing
  1. 2026 Edition

50 miles on Colorado's Continental Divide - three climbs, seven creek crossings, 12,000+ feet of gain

Directions
Registration OpensJanuary 15, 2025
DeadlineJanuary 31, 2025
Find a Qualifier
This event took place on June 21, 2026

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All trail races in Colorado→
June 21, 2026
Sunday 5:00am MDT start
Lake City, CO
United States
48 miles
Loop Course
12,000 ft
Elevation Gain
Lottery
Race selection via lottery
No Service Requirement
Does not require trail or volunteer work
Qualifier
Distance qualifier required ()
Very Challenging
Experienced ultrarunners
Good Lottery Odds
Most applicants are selected
Links
WebsiteInstagramFacebook
1995
Established
300
Field Size
80%
Finish Rate
7:35 M / 9:11 W
Course Record

What Makes It Great

The San Juan Solstice 50 is a counter-clockwise loop through the San Juan Mountains of south-central Colorado, starting and finishing in the historic mining town of Lake City. The course climbs from 8,671 feet to a high point of 13,334 feet on the Continental Divide, linking the Alpine Gulch Trail, the ghost town of Carson, and miles of the Colorado Trail and Continental Divide Trail through Colorado's most dramatic high-country terrain. Three major climbs totaling over 12,000 feet of gain are separated by two long exposed ridge sections of 9–10 miles between aid stations. Seven creek crossings in Alpine Gulch guarantee wet feet within the first seven miles. The race benefits the Lake City Volunteer EMTs and graduating seniors at Lake City Community School, and has been run every year since 1995.

Difficulty

Advanced
8/10

Experienced ultrarunners

High Altitude
Steep Climbing
Technical Terrain
Exposed Ridgeline
River Crossing
Variable Weather
Remote Terrain
Strict Cutoffs

Race Highlights

Continental Divide at 13,334 ft
Miles of exposed running along the CT/CDT at Colorado's highest terrain, with views stretching across the San Juan Mountains.
Three monster climbs
4,500' up Alpine Gulch, 4,000' to the Carson ghost town and Divide, then a 2,000' wall at mile 41—no respite between them.
Seven creek crossings
Alpine Gulch's seven crossings guarantee cold, wet feet by mile 7—mandatory fun at high altitude.
EMT fundraiser since 2002
Every dollar of the $250 entry fee supports Lake City's volunteer EMS and local high school scholarships.
Course records by legends
Dakota Jones set the men's record (7:35:03, 2013); Courtney Dauwalter holds the women's record (9:11:10, 2021).

Finish Awards

Survivor Award (Sub-16 hours)
Custom finisher hat for all official finishers under the 16-hour cutoff.
Cannibal Award (Sub-12 hours)
Special finisher hat for runners completing under 12 hours.
Mutant Award (Sub-10 hours)
Special finisher hat for runners completing under 10 hours.
Freak of Nature Award (Sub-8 hours)
Elite finisher hat for runners completing under 8 hours—rarely awarded.

San Juan Solstice 50 Mile

Lake City, CO, United StatesJune 21, 2026

June 21, 2026
Course map for San Juan Solstice 50 Mile
DistDistance48 mi
GainElevation Gain12,000 ft
LimitCutoff16 h
High AltitudeSteep ClimbingExposed RidgelineRiver CrossingVariable WeatherRemote TerrainStrict Cutoffs

Entry Timeline

Registration OpensJanuary 15, 2025
Registration DeadlineJanuary 31, 2025
Race DayJune 21, 2026

Lottery

51%selection rate

2026 lottery: 300 slots filled from ~585 applicants (300 registered + 285 waitlisted). Lottery runs January 15–31 each year.

Qualifier

Requiredfor race entry

Must complete a qualifier within the qualification window

Must have completed a trail ultra over marathon length. The Pikes Peak Marathon is also accepted as a qualifier.

Service Requirement

This race does not have a service requirement for entry.

Entry Demand Analysis

Moderate
Entry Demand Level
585
Lottery Entries
300
Available Spots

Terrain

Surface Types
Singletrack60%
Mining Roads25%
Gravel Road10%
Pavement5%
48.0 mi
Distance
Loop
Route
16h
Cutoff Time
10,925 ft
Average Elevation
12,000 ft
Total Ascent
12,000 ft
Total Descent
13,343 ft
High Point
8,632 ft
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationMileElevation
Start
Start
0.08,675 ft
Alpine Gulch
Aid Station
7.011,834 ft
Williams Creek
Aid Station
15.79,255 ft
Carson
Aid Station
21.011,276 ft
Divide
Aid Station
31.011,847 ft
Slumgullion
Aid Station
40.09,908 ft
Vickers
Aid Station
46.510,699 ft
Finish
Finish
50.08,675 ft

Sign in to see cutoffs, crew access, drop bags, and services for every aid station.

Dogs Discouraged
No on-site camping available

Crew Access Points

Pacer Rules

  • Pacers allowed from mile 40 (Slumgullion aid station) to the finish. One pacer per runner; additional pacers may be pre-approved by the race director. Pacers must check in at Slumgullion aid station and identify the runner they are pacing. Poles allowed for pacers.

Crew Rules

  • Crew access permitted at Williams Creek (mile 15.7) and Slumgullion Pass (mile 40) only. Park well off the roads. Aid may be given only within 100 yards of the aid station.
Weather
High Altitude

Course reaches 13,334 ft on the Continental Divide; substantial time above 12,000 ft. Acclimatization strongly recommended.

Lightning/Thunderstorm Risk

Afternoon thunderstorms are a serious and frequent hazard on the exposed Divide sections (miles 21–40). Race rules explicitly permit leaving the marked course to shelter below treeline.

Snow/Ice Possible

Snow on the Divide is possible even in late June. Runners should carry adequate layers; past editions have seen snow squalls and snowfields on the high-altitude CT/CDT sections.

Cold/Hypothermia Risk

Temperatures above treeline can drop sharply, especially after late-afternoon storms. Night finishers should carry warm layers.

Gear Rules

Trekking poles allowed

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Race Reports

Up and Away for the Day — San Juan Solstice 50 2022
By Sarah Lavender Smith • 2022
2022 San Juan Solstice 50
By Exploring the Rockies • 2022
San Juan Solstice 50M Race Report — 8 Years Later, 31 Minutes Faster
By Andrew Skurka • 2016

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Register•June 21, 2026