TRAIL DES SAPINS - L'infernale 2026
Forecast published: 34°F feels-like at the coldest, 46°F at the warmest, with rain expected.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 4 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 - TRAIL DES SAPINS - L'infernale · 2026
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 | km 15.8km 15.8 | km 30.4km 30.4 | km 40.6km 40.6 | Arrivéekm 48.2 |
|---|---|---|---|---|
| Water | available | available | available | available |
| Brand products | available | available | available | available |
Elevation profile
The course and its aid stations
TRAIL DES SAPINS - L'infernale: 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 6h53 to 4h30, and the aid-station stop budget from 0h15 to 0h05. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
Below a UTMB® Index of roughly 495, the overall cut-off of 7h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 6h53 | 0h15 | 1.4 | 413 g | 4.8 L | 3,439 mg | +0h07 |
| 550 | 6h21 | 0h12 | 0.9 | 381 g | 4.4 L | 3,174 mg | +0h39 |
| 600 | 5h48 | 0h10 | 0.3 | 348 g | 4.1 L | 2,902 mg | +1h12 |
| 650 | 5h26 | 0h09 | — | 326 g | 3.8 L | 2,720 mg | +1h34 |
| 700 | 5h05 | 0h07 | — | 305 g | 3.6 L | 2,541 mg | +1h55 |
| 750 | 4h47 | 0h06 | — | 287 g | 3.3 L | 2,389 mg | +2h13 |
| 800 | 4h30 | 0h05 | — | 270 g | 3.1 L | 2,247 mg | +2h30 |
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.
Other trails worth preparing for
- Pierre Buffière - La TimGroup41 km · 1,331 m D+ · October 18, 2026
- TRAIL DES GRISEMOTTES - 33 km34 km · 1,510 m D+ · October 18, 2026
- Montamisé - Marathon solo42 km · 503 m D+ · October 18, 2026
- Reichshoffen - Trail des Forgerons43 km · 1,189 m D+ · October 18, 2026
- TRAIL SSP SHELL PACIFIC - Trail Shell Pacific50 km · 2,667 m D+ · October 18, 2026
- TRAIL DES GRISEMOTTES - TRAIL 33 kms DUO MIXTE34 km · 1,510 m D+ · October 18, 2026
- Trail BBC - La Vilaine32 km · 791 m D+ · October 24, 2026
- Trail BBC - La BBC46 km · 1,125 m D+ · October 24, 2026
- Trail des Colombes44 km · 1,434 m D+ · October 24, 2026
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 — TRAIL DES SAPINS - L'infernale
Weather for TRAIL DES SAPINS - L'infernale
Section-by-section forecasts for TRAIL DES SAPINS - L'infernale, calculated at the estimated passing time: feels-like temperature, rain or snow, wind and thunderstorms. Three models — AROME (Météo-France), ICON (DWD) and ECMWF IFS — served from the finest to the farthest-reaching.
Forecasts for a 600 UTMB Index runner, at their estimated passage time. Start Sat, 10/24 03:30 PM: Rain, 41°F. Coldest: 34°F feels-like at Ravitaillement km 40.6 (Sat, 10/24 08:23 PM); warmest: 46°F at Arrivée (Sat, 10/24 09:18 PM). Rain expected on 5 segments, including Start, Ravitaillement km 15.8, Ravitaillement km 30.4, Ravitaillement km 40.6, …; up to 5 mm on one segment. Gusts up to 22 mph at Ravitaillement km 40.6.
Forecast, not guaranteed: in the mountains a model describes a grid of several hundred meters, not the slope you're on.
Weather data: Météo-France (AROME), DWD (ICON), ECMWF (IFS) — CC BY 4.0, via Open-Meteo
Frequently asked questions
How many checkpoints?
TRAIL DES SAPINS - L'infernale has 4 checkpoints: 4 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Ravitaillement km 15.8: 15.8 km and 726 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?
TRAIL DES SAPINS - L'infernale is 48 km long with 2334 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 5h48 for TRAIL DES SAPINS - L'infernale.
What's the weather forecast?
Forecast published: 34°F feels-like at the coldest, 46°F at the warmest, with rain expected. RAVIT publishes the weather for TRAIL DES SAPINS - L'infernale section by section: feels-like temperature, rain or snow, wind and storms, at the estimated passage time. Forecasts come from AROME (Météo-France), ICON (DWD) and ECMWF IFS, refreshed several times a day.
Want to stack the odds in your favor for TRAIL DES SAPINS - L'infernale?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
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