Whistler 100K is the 100km ultra trail at Ultra Trail Whistler by UTMB 2026 (Creekside Plaza, Whistler, Canada). The race starts on August 22, 2026 at 05:00 AM. It starts in Creekside Plaza, Whistler and finishes in Spruce Grove Park, Whistler. The time limit is 24 h.
Race strategy
Hold a steady pace and save energy for every section.
- Big early climb with 1500m gain. Hold your pace, save your legs for later.
- 1140m descent. Go easy, save your quads.
- Steep 28% wall. Control your pace and stay focused.
- Long race. Control your HR and effort. Early mistakes cost the most.
- Control your HR on the first mountain, save your quads on the descents until 47.0km, then run your race pace, and go all out on the final descent from 92.7km.
- Start · 0.0km–1.1km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
- Settle in · 1.1km–11.3km · Climb of 1498m, high point 2159m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace.
- Work · 11.3km–47.0km · Descent of 283m averaging 10%, descent of 1140m averaging 17%, descent of 1252m averaging 10%. Plus 1 more climb. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can. Hike the steepest pitches.
- Fade · 47.0km–92.7km · Climb of 507m. Plus 2 more climbs and 2 descents. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. Climb by heart rate or breathing, not pace. Running pays off here: run wherever you can. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
- Home · 92.7km–99.5km · Descent of 433m averaging 6%. No heroics: settle back into your own effort and hold it to the line. Long descent: keep it even and let go only near the end.
Course
The course climbs 5100m+. With 51m/km of climbing, this is a true mountain course with sustained climbs and descents. By gradient, 40% of the distance is uphill, 39% downhill and 21% flat. The longest climb runs 11.3km at an average 13.3% grade (1498m of vertical). The longest descent runs 12.2km at an average 10.2% grade (1252m of vertical). The steepest climb averages 32.7% over 0.2km. The steepest descent drops at 27.8% over 1.1km. Surface: 65% trail, 16% smooth, and 15% road. Flat-equivalent effort: 147.0 FlatKM.
Summits
The course also passes close to Whistler Mountain (2181m).
Poles
Trekking poles are worth taking: about 12.7km of the course favours them.
Quad damage
Quad damage risk is high (index 55 of 100), with 65% of the load in the first half: 3 critical descents, the last of them run on already damaged legs. Downhill-specific preparation and a controlled early pace pay off here.
- Control your HR on the first mountain, save your quads on the descents until 47.0km, then run your race pace, and go all out on the final descent from 92.7km.
- #3 · 11.3–14.0 km · 283 m D−, -10.5% · 85.5 km ahead → control
- #1 · 20.8–27.6 km · 1140 m D−, -16.6% · 71.9 km ahead → control
- #2 · 34.8–47.0 km · 1252 m D−, -10.2% · 52.5 km ahead → control
- 56.4–59.3 km · 364 m D−, -12.7% · 40.2 km ahead → your pace
- 92.7–99.5 km · 433 m D−, -6.4% · 0.0 km ahead → even, let go at the end
- Plus 1 more notable descent not listed: your pace.
Weather
On race day, start temperatures have historically ranged from 8°C to 15°C, with around 5°C at the highest point; the chance of precipitation is about 34%. Heavy rain of 10.0mm or more falls on about 7% of days around this date.
Results
228 finishers completed the 2026 edition. Men's winner: Dylan Flewelling (United States) in 11:34:05. Women's winner: Tina Muir (Great Britain) in 12:18:40.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Whistler 100K.
Other distances of Ultra Trail Whistler by UTMB 2026Whistler 50K (50.0km)
Other editions of Whistler 100K2027·2025
Official websitewhistler.utmb.world