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Scout Mountain Ultras 100 Mile

Basic Listing
  1. 2026 Edition

A 102-mile Hardrock qualifier through Idaho's Caribou-Targhee National Forest with 22,000+ feet of gain

Explore the Course
Interactive map with aid stations, elevation & weather
DirectionsExplore
Registration OpensDecember 01, 2025
DeadlineJune 03, 2026
This event took place on June 05, 2026

Nearby races

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Course map for Scout Mountain Ultras 50 Mile

Scout Mountain Ultras 50 Mile

50 Mile
Pocatello, ID, US
Jun 6, 2026
53.07 miles
10,750 ft gain
Point to Point
Crew
Dropbags
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105.7 miles
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Course map for Snowbasin 58K

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Course map for Wasatch Front 100 Mile Endurance Run
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Course map for Rose Canyon Ultra 50 Mile

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Course map for Speedgoat Mountain Races 50K

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Course map for Salt Flats Endurance Runs 100 Mile

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100.48 miles
5,630 ft gain
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All trail races in Idaho→
June 05, 2026
Friday 10:00am MDT start
Pocatello, ID
United States
100.2 miles
Point to Point Course
21,390 ft
Elevation Gain
36°F – 78°FTemp Range
46% – 47%Cloud Cover
0% (0.03 in)Precipitation
8 mph – 10 mphWind Speed
40% – 51%Humidity
5:52 AMSunrise
9:03 PMSunset
Open Registration
No lottery
Service Requirement
Trail Work or Volunteering
No Qualifier
No qualifier race required
Very Challenging
Experienced ultrarunners
Fills Up Fast
High demand — register as soon as possible
Hardrock 100 Endurance Run Qualifier
Links
WebsiteInstagramFacebook
2008
Established

What Makes It Great

A demanding 102-mile traverse through the Caribou-Targhee National Forest outside Pocatello, Idaho, with roughly 22,300 feet of climbing across the Bannock and Pocatello mountain ranges. Starting at Lead Draw trailhead on Friday morning, runners navigate remote mountain terrain with potential snow, mud, and highly variable spring weather before finishing at Mink Creek. The 100-miler is a Hardrock Hundred qualifier and requires an 8-hour trail or environmental service commitment before entry.

Difficulty

Advanced
7/10

Experienced ultrarunners

Technical Terrain
Steep Climbing
Technical Descent

Race Highlights

Hardrock 100 qualifier
One of the qualifying races for entry into the prestigious Hardrock Hundred Endurance Run
22,300 ft of climbing
Traverses the Bannock and Pocatello ranges through remote Caribou-Targhee National Forest terrain
Spring snow traverses
Early June timing means runners often encounter snow, mud, and potential glissading on course
50% field for women & non-binary
At least half the field at every distance is reserved for women, femme, and non-binary runners

Finish Awards

Finisher Prize
Every finisher will take home a small prize to commemorate their great achievement.

Scout Mountain Ultras 100 Mile

Pocatello, ID, United StatesJune 05, 2026

June 05, 2026

Scout Mountain Ultras 100 Mile is a point-to-point trail race in Pocatello, ID, United States, held on June 05, 2026. The course covers 100.2 miles, climbs 21,390 ft, and has a 36h cutoff.

Course map for Scout Mountain Ultras 100 Mile
DistDistance100.2 mi
GainElevation Gain21,390 ft
LimitCutoff36 h
Steep ClimbingTechnical Descent

Entry Timeline

Registration OpensDecember 01, 2025
Registration DeadlineJune 03, 2026
Race DayJune 05, 2026

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

8 hrsTrail Work
or
8 hrsVolunteering

Scout Mountain Ultras has a service requirement for all starters of the 100 mile race. This can be satisfied by performing eight hours of work in one or a combination of the following: 1. organization of an ultra 2. service at an ultra (e.g. working an aid station) 3. work on a trail used by an ultra. 4. service work for an environmental non-profit (e.g. Idaho Conservation League) Note that generic trail work is not acceptable - it must be a trail on which an ultra is run, and must be coordinated with the Race Director of that ultra

100.2 mi
Distance
Point to Point
Route
36h
Cutoff Time
6,122 ft
Average Elevation
21,390 ft
Total Ascent
19,470 ft
Total Descent
7,933 ft
High Point
4,820 ft
Low Point
Explore Course
Course map for Scout Mountain Ultras 100 Mile
Launch Course Explorer

Aid Stations & Cutoffs

LocationMileElevationCutoffCrewPacersDrop bags
Lead Draw
Start
0.05,180 ft—
Walker Creek
Aid Station
5.35,577 ft
2h12:00 PM
Goodenough Creek
Aid Station
15.75,512 ft
5h3:00 PM
Crew
Drop Bags
Old Tom Spur – Water
Resource
19.07,575 ft—
Old Tom Summit
Landmark
20.68,622 ft—
Old Tom Spur – Water (Return)
Resource
22.17,575 ft—
South Fork Road
Aid Station
29.45,955 ft
9h15m7:15 PM
Crew
Drop Bags
West Fork
Aid Station
36.45,210 ft
11h9:00 PM
CrewMetered Access
Pacers
Drop Bags
Water Cache
Resource
42.15,663 ft—
Gibson Jack
Aid Station
48.55,203 ft
14h45m12:45 AM +1
Crew
Pacers
Drop Bags
Cusick Creek
Aid Station
55.85,692 ft—
City Creek
Aid Station
61.34,820 ft
19h45m5:45 AM +1
Crew
Pacers
Drop Bags
Water Cache
Resource
65.37,057 ft—
Elk Meadows
Aid Station
73.16,778 ft—
West Fork
Aid Station
79.05,213 ft
26h45m12:45 PM +1
Crew
Pacers
Drop Bags
Scout Mountain
Aid Station
85.46,608 ft
29h30m3:30 PM +1
Crew
Pacers
Big Fir
Aid Station
96.35,797 ft
34h8:00 PM +1
Pacers
Drop Bags
Mink Creek
Finish
100.25,154 ft
36h10:00 PM +1

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.

No Dogs Allowed
On-Site Camping Available

Free camping at Mink Creek Group Campground finish area. Large grassy field with limited parking — one space per runner. Small RVs (up to 26 ft) welcome; larger vehicles should use Scout Mountain Campground nearby.

Crew Access Points

Pacer Rules

  • Must sign waiver prior to starting
  • Must wear a pacer bib while pacing

Crew Rules

  • One crew access tag per runner that must be displayed on the vehicle
Daylight
15h 11m
5:52 AM9:03 PM
74°F / 49°F
Feels like 71°F / 45°F
Temperature Hi/Lo
0% (0.02 in)
Precipitation
8 mph
Wind
50%
Humidity
47%
Cloud Cover
Based on historical averages for June 05

Gear Rules

Trekking poles allowed

Required Gear

  • Mylar emergency blanket
  • Whistle
  • Course map (On phone or watch)
  • Lightweight rain jacket (if weather dictates)

Recommended Gear

  • 500ml of water (minimum)
  • Light jacket
  • Small first aid kit

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Registration closed