Ultra Trail Whistler - 25K 2027
The forecast arrives five days before the start.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 5 aid stations to plan your nutrition and hydration segment by segment.
What's your time based on your UTMB?
Times estimated by the RAVIT model, learned from real ultra-trail finish times. Enter your UTMB Index (utmb.world) to get a personalized estimate.
Cut-off times and crew - Ultra Trail Whistler - 25K · 2027
Data from the official race rules, checked for every edition. The race rules prevail. Positions are interpolated along the GPX track and are a guide, not official course marking.
What you'll find at each aid station
| Product | Big Burnkm 4.6 | Mid Station - 1km 6.6 | Rendezvouskm 10.1 | Mid Station - 2km 18.8 | Spruce Grove Park - Finishkm 26.9 |
|---|---|---|---|---|---|
| Water | available | available | available | available | available |
| Brand products · Näak | unavailable | unavailable | available | unavailable | unavailable |
| Hot meal | unavailable | unavailable | unavailable | unavailable | available |
La feuille de ton assistance pour Ultra Trail Whistler - 25K · 2027
L'assistance n'est autorisée sur aucun poste de cette course.
Elevation profile
The course and its aid stations
Ultra Trail Whistler - 25K: times, aid-station stops and fuelling needs by UTMB® Index
Between a UTMB® Index of 500 and 800, the estimated finish time on this race runs from 3h56 to 2h33, and the aid-station stop budget from 0h04 to 0h02. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 3h56 | 0h04 | — | 236 g | 2.8 L | 1,966 mg | +4h04 |
| 550 | 3h37 | 0h04 | — | 217 g | 2.5 L | 1,805 mg | +4h23 |
| 600 | 3h19 | 0h03 | — | 199 g | 2.3 L | 1,659 mg | +4h41 |
| 650 | 3h06 | 0h03 | — | 186 g | 2.2 L | 1,549 mg | +4h54 |
| 700 | 2h53 | 0h02 | — | 173 g | 2 L | 1,443 mg | +5h07 |
| 750 | 2h43 | 0h02 | — | 163 g | 1.9 L | 1,359 mg | +5h17 |
| 800 | 2h33 | 0h02 | — | 153 g | 1.8 L | 1,275 mg | +5h27 |
Figures based on 60 g of carbohydrate, 700 mL of fluid and 500 mg of sodium per hour, "average" preparation and mild conditions (15–25 °C). Above 25 °C, count on roughly 900 mL/h and 700 mg/h. Carbohydrate intake is trained: 60 g/h is a floor, 90 g/h assumes a glucose-fructose blend and a gut used to it.
Edition 2026 measurements
Edition 2026 measured 25 km, vs 26.9 km for this one: its times aren't included here.
See segment-by-segment analysis of Ultra Trail Whistler - 25KOther trails worth preparing for
- Ham-Sud - 30km30 km · 1,801 m D+ · November 1, 2026
- Stoneham-et-Tewkesbury, QC - 17km17 km · 637 m D+ · October 25, 2026
- Stoneham-et-Tewkesbury, QC - 40km41 km · 1,534 m D+ · October 24, 2026
- Stoneham-et-Tewkesbury, QC - 31km32 km · 1,243 m D+ · October 24, 2026
- Mont-Tremblant, QC - 28km27 km · 1,500 m D+ · October 17, 2026
- Mont-Tremblant, QC - 20km19 km · 1,099 m D+ · October 17, 2026
- Bromont - BU2525 km · 1,053 m D+ · October 17, 2026
- Beaupré - 42km43 km · 1,366 m D+ · October 16, 2026
- Beaupré - 33km32 km · 1,178 m D+ · October 16, 2026
Ultra Trail Whistler - 25K over the years
Sources and method
- Time projection — times by UTMB Index are taken from the actual splits of runners in each level band on previous editions of this race, aid station stops included. No formula is used as long as these results exist.
- Trail nutrition — hourly targets for carbohydrate, fluid and sodium follow the commonly accepted ultra-endurance guidance. La Clinique du Coureur — Fuelling in trail running
- Course, aid stations and cut-offs — taken from the event's official rules, which prevail in case of any discrepancy. Official site — Ultra Trail Whistler - 25K
Weather for Ultra Trail Whistler - 25K
The weather for Ultra Trail Whistler - 25K will appear here as soon as the forecast models reach that date, around five days before the start: feels-like temperature, rain, snow, wind and storms, section by section and at your passage time.
Detailed weather for Ultra Trail Whistler - 25K, hour by hour on the courseFrequently asked questions
How many checkpoints?
Ultra Trail Whistler - 25K has 5 checkpoints: 2 aid stations and 3 water points. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Mid Station - 2: 8.7 km and 149 m elevation gain. That's the one to load up for first.
How do I find the exact location of an aid station?
The Google Maps icon in the “Access” column opens the aid station's location: handy for planning your crew's routes.
What distance and elevation gain?
Ultra Trail Whistler - 25K is 27 km long with 1539 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 3h19 for Ultra Trail Whistler - 25K.
What's the weather forecast?
The weather for Ultra Trail Whistler - 25K will be published on this page around five days before the start, once the forecast models reach the race date. It will be detailed section by section: feels-like temperature, rain, snow, wind and storms.
Want to stack the odds in your favor for Ultra Trail Whistler - 25K?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
No card required · Instant results