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Built on bad decisions in Boulder, CO.

Ultra Trail Whistler 100K

Draft Listing
  1. UTMB
  2. 2026 Edition
UTMB World Series3 Stones

A two-mountain, 24-hour odyssey through BC's alpine crown jewel

Directions
DeadlineAugust 16, 2026
Calculate UTMB Lottery Odds3 Running Stones
Register

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All trail races in British Columbia→
August 22, 2026
Saturday 5:00am PDT start
Whistler, BC
Canada
102.4 km
Loop Course
5,088 m
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
WebsiteInstagramFacebook
2024
Established
74%
Finish Rate

What Makes It Great

The flagship 100K takes runners on a grand tour of both Whistler and Blackcomb mountains. Starting at Creekside Gondola before dawn, the course climbs through Whistler Summit and Roundhouse before descending to the valley base, then ascends Blackcomb past Rendezvous Aid Station, and winds through the surrounding Coast Mountain forest for a triumphant finish at Spruce Grove Park. With nearly 5,900 meters of gain and a 24-hour time limit, night running is virtually inevitable for most of the field. Drop bags are permitted at three mid-course aid stations, and crew can meet runners at three designated locations.

Difficulty

Advanced
7/10

Experienced ultrarunners

Technical Terrain
Steep Climbing
Night Running
Variable Weather
Sun Exposure

Race Highlights

Two mountain summits
The course tops both Whistler and Blackcomb peaks, climbing above 2,000 meters on each leg of the race
5,900+ meters of climbing
Nearly 20,000 feet of total gain across a full loop of Whistler Blackcomb's world-class resort terrain
Canada's UTMB debut
Inaugurated in 2024 as the first UTMB World Series event on Canadian soil
Night running required
With a 24-hour cutoff, most finishers will spend significant time on course after dark
Sea to Sky singletrack
Weaves through old-growth Coast Mountain forest, past glacial lakes, and across iconic trails of the BC interior

Ultra Trail Whistler 100K

Whistler, BC, CanadaAugust 22, 2026

August 22, 2026
Course map for Ultra Trail Whistler 100K
DistDistance102.4 km
GainElevation Gain5,088 m
LimitCutoff24 h
Steep ClimbingNight RunningVariable WeatherSun Exposure

Entry Timeline

Registration DeadlineAugust 16, 2026
Race DayAugust 22, 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.
102.4 km
Distance
Loop
Route
24h
Cutoff Time
1,092 m
Average Elevation
5,088 m
Total Ascent
5,094 m
Total Descent
2,164 m
High Point
600 m
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationkmElevation
100K Start
Start
0.0654 m
Whistler Summit Aid Station
Aid Station
10.92,164 m
Roundhouse Aid Station
Aid Station
20.21,828 m
Big Burn Aid Station
Aid Station
27.8769 m
Rendezvous Aid Station
Finish
97.01,866 m
Mid Station Hydration Station
Aid Station
40.51,194 m
Mel's Dilemma Hydration Station
Aid Station
48.6639 m
Pump Up Aid Station
Aid Station
58.1784 m
Weather Check Aid Station
Aid Station
66.6603 m
Creekside Aid Station
Aid Station
77.0646 m
Spruce Aid Station
Aid Station
84.3646 m
Finish
Finish
97.0646 m

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

No Pacers Allowed

Crew Rules

  • Crew access is permitted at three designated aid stations only: Big Burn – 1 (km 35.7), Big Burn – 2 (km 51.6), and Weather Check (km 74.0). Crew are not permitted at any other location on course. Some aid station locations require a walk-in from designated parking drop-off areas.
Weather
Rapid Weather Changes

BC Coast Mountain weather can change rapidly; afternoon thunderstorms are possible at elevation in late August

Cold/Hypothermia Risk

Summit elevations above 2,000 meters can see temperatures drop significantly after dark, especially for 100K runners spending time on course overnight

Gear Rules

Trekking poles allowed

Required Gear

No required gear specified

Recommended Gear

No recommended gear specified

Featured Videos

Ultra Trail Whistler by UTMB | 2024 Race Highlights
Ultra Trail Whistler by UTMB | 2024 Race Highlights
UTMB World Series•2024

Race Reports

Yes, I Ran Ultra Trail Whistler
By Electric Cable Car • 2024

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Register•August 22, 2026