Grand Trail du Lac 74 km 2026
Also known as: GTL · Grand Trail du Lac du Bourget · Lac du Bourget · Le Bourget-du-Lac
A full loop of Lac du Bourget in Savoie, France's largest natural lake, from Le Bourget-du-Lac. It starts by headlamp along the shore, takes in the Chambotte viewpoint and ridge paths, and late in the race passes beneath the Dent du Chat. About 70% of the course is singletrack.
3,580 m of climbing over 74 km (48 m per km). In 2025, 89% of starters finished. The median finish was about 12 h.
Estimate your finish from your ITRA index
Estimate (no finisher data for this race)
Enter your ITRA performance index to get an estimated finish time, aid-station splits and cutoff margins. This race has no finisher ITRA data, so it uses the transfer model: your predictions for the 205 races that do have finisher data, scaled by distance and elevation gain (km-effort) — the same calculation as the TRAIL STATUS app. Nothing is saved or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Sun, 18 Oct 2026
- Start
- 05:00
- Location
- France
- Distance
- 74 km
- Elevation gain
- 3,580 m
- Time limit
- 15h 15m
- ITRA
- 50M
- Official website
- www.grandtraildulac.com/75km-solo
Elevation profile
No elevation data yet.
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 21 km | Ravito 1 Belvédère de la Chambotte | 21 km | Day 1 09:004h |
| 2 | 37 km | Aid 2Ravito 2 Portout（温かい食事） | 16 km | Day 1 12:457h 45m |
| 3 | 51 km | Aid 3Ravito 3 Ontex（温かい食事） | 14 km | — |
| 4 | 58 km | Aid 4Ravito 4 Chapelle du Mont du Chat（距離は概算） | 7 km | Day 1 16:3011h 30m |
| 5 | 68 km | Ravito 5 Relais de l'Aigle | 10 km | Day 1 18:4513h 45m |
| F | 74 km | FINISH Le Bourget-du-Lac | 6 km | Day 1 20:1515h 15m |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
509 starters, 451 finishers (88.6% finish rate). Finish times of those who finished:
- Fastest
- 7h 28m
- Top 10%
- 9h 32m
- Top 25%
- 10h 34m
- Median
- 11h 44m
- Top 75%
- 13h 18m
- Top 90%
- 14h 15m
- Last finisher
- 14h 50m
"Top 25%" means one in four finishers had crossed the line by this time.
Years with a different course or different cutoffs are not directly comparable.
Other races
- UTMB Mont-Blanc UTMB 2026Fri, 28 Aug 2026 · France · 174 km
- Grand Raid des Pyrénées Ultra Tour 160K (Pyrenees, France) 2026Fri, 21 Aug 2026 · France · 165.5 km
- Marathon du Mont-Blanc 42km (Chamonix, France) 2026Sun, 28 Jun 2026 · France · 42 km
- Marathon du Mont-Blanc 42km (Chamonix, France) 2027Sun, 27 Jun 2027 · France · 42 km
From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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