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Built on bad decisions in Boulder, CO.

Beaverhead Endurance Runs 100k

Basic Listing
  1. 2026 Edition

62 miles along the Continental Divide through remote Idaho-Montana high country

Directions
DeadlineJune 14, 2026
Find a Qualifier
Register

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All trail races in Idaho→
July 11, 2026
Saturday 4:00am MDT start
Salmon, ID
United States
62.1 miles
Point to Point Course
10,730 ft
Elevation Gain
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
Qualifier
Distance qualifier required (50K)
Very Challenging
Experienced ultrarunners
Links
WebsiteInstagramFacebook
2014
Established

What Makes It Great

The Beaverhead 100k follows 62 miles of the Continental Divide from Bannock Pass on the Idaho-Montana border to the finish in the Bohannon Creek drainage near Salmon, Idaho. The course tracks the Continental Divide National Scenic Trail (CDT) for the first 49 miles — always at high elevation, traversing the true continental divide before dropping off into the headwaters of Bohannon Creek. Terrain alternates between smooth singletrack, ATV doubletrack, and alpine boulder/scree fields. No pacers are allowed, making it a true solo sufferfest through some of the most remote high-country terrain in the American West.

Difficulty

Advanced
8/10

Experienced ultrarunners

Technical Terrain
Steep Climbing
Technical Descent
High Altitude
Night Running
Remote Terrain
No Pacers
Variable Weather
Sun Exposure

Race Highlights

49 miles on the Continental Divide Trail
Course follows the official CDT from Bannock Pass, tracing the Idaho-Montana border along the true continental divide through the entire first half.
8,500 ft average elevation
The entire course runs high — from 5,500 ft at the finish to 10,000 ft at the peak, always on or near the divide with no descents into valley bottoms.
Point-to-point through three counties of wilderness
From Bannock Pass to Bohannon Creek, covering CDT singletrack, ATV doubletrack, and alpine scree fields in the Salmon-Challis National Forest.
Western States 100 qualifier
A WSER qualifying race that also earns UTMB Index points. Both races sell out annually.
No pacers, no excuses
The 100k is a no-pacer race — you run the Continental Divide solo from start to finish.

Finish Awards

Finisher License Plate
Custom license plate for all finishers.
Finisher Hoodie
Custom finisher hoodie for all finishers. Registration also includes a unique running shirt and post-race meal.

Beaverhead Endurance Runs 100k

Salmon, ID, United StatesJuly 11, 2026

July 11, 2026
Course map for Beaverhead Endurance Runs 100k
DistDistance62.1 mi
GainElevation Gain10,730 ft
Steep ClimbingTechnical DescentHigh AltitudeNight RunningRemote TerrainNo PacersVariable WeatherSun Exposure

Entry Timeline

Registration DeadlineJune 14, 2026
Race DayJuly 11, 2026

Lottery

This event uses open registration - no lottery entry required.

Qualifier

Requiredfor race entry

Must complete a 50K race or longer within the qualification window

Must have completed a 50K distance or greater race within the past 3 years of the race date (January 1, 2023 to July 1, 2026 for the 2026 edition).

Service Requirement

This race does not have a service requirement for entry.

Terrain

Surface Types
Singletrack59%
Doubletrack35%
Unknown6%
62.1 mi
Distance
Point to Point
Route
8,730 ft
Average Elevation
10,730 ft
Total Ascent
11,390 ft
Total Descent
10,039 ft
High Point
7,034 ft
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationMileElevation
Start
Start
0.07,687 ft
Digmore Mine
Aid Station
4.58,901 ft
Goat Mountain
Aid Station
13.59,177 ft
Twenty Mile
Aid Station
19.19,131 ft
Lemhi Pass
Aid Station
27.27,552 ft
Warm Springs
Aid Station
31.78,333 ft
Cutout
Aid Station
38.08,471 ft
Goldstone
Aid Station
45.69,098 ft
Janke Lake
Aid Station
50.39,642 ft
Bohannon Creek
Aid Station
55.78,238 ft
Finish
Finish
60.55,361 ft

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

Dogs Allowed
No on-site camping available

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

  • 100K runners may be crewed at Lemhi Pass AS (mile 27), Warm Springs AS, and Cutout AS (mile 38). 4WD/AWD vehicle recommended. Specific entry/exit routes are required per race instructions to manage traffic and preserve permits. Failure to follow crew rules results in runner DQ.
Weather
High Altitude

Course averages 8,500 ft with sections reaching 10,000 ft along the Continental Divide — acclimatization recommended.

Lightning/Thunderstorm Risk

Afternoon thunderstorms are common in July on the exposed ridgelines of the Continental Divide.

Cold/Hypothermia Risk

4 AM start and high-altitude terrain means cold conditions early in the race; temperatures drop significantly above treeline overnight.

Gear Rules

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Race Reports

Beaverhead 100k Race Report
By Margaret B. (Team RunRun) • 2024

Race reports from other Beaverhead Endurance Runs events

Beaverhead 55k Race ReportBeaverhead Endurance Runs 55k
By The Average Joe Runner • 2024

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Register•July 11, 2026