Mont-Blanc - ETC 2026
Your index is enough · arrival time and first checkpoints free
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 2 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.
Predicted race time based on your UTMB Index® · smoothed times achieved by runners at your level in past editions
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Cut-off times and crew - Mont-Blanc - ETC · 2026
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| La Suche | 6.6 | 0 m | 6.6 | 833 m | 238 m | Forbidden | Tue 04:55 PM | — |
| Courmayeur | 15.4 | 0 m | 8.8 | 368 m | 961 m | — | Tue 07:10 PM | — |
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 | La Suchekm 6.6 | Courmayeurkm 15.4 |
|---|---|---|
| Water | available | available |
| Brand products · Näak | available | available |
La feuille de ton assistance pour Mont-Blanc - ETC · 2026
L'assistance n'est autorisée sur aucun poste de cette course.
Elevation profile
The course and its aid stations
Mont-Blanc - ETC: 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 2h19 to 1h32. These times include aid-station stops: they come from real durations between two timing points, and this race's timing does not measure stops separately.
Source| UTMB® Index | Estimated time | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|
| 500 | 2h19 | — | 139 g | 1.6 L | 1,158 mg | +2h11 |
| 550 | 2h08 | — | 128 g | 1.5 L | 1,067 mg | +2h22 |
| 600 | 1h59 | — | 119 g | 1.4 L | 992 mg | +2h31 |
| 650 | 1h50 | — | 110 g | 1.3 L | 917 mg | +2h40 |
| 700 | 1h42 | — | 102 g | 1.2 L | 850 mg | +2h48 |
| 750 | 1h37 | — | 97 g | 1.1 L | 808 mg | +2h53 |
| 800 | 1h32 | — | 92 g | 1.1 L | 767 mg | +2h58 |
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.
Measured on the 2024 edition: the field checkpoint by checkpoint
1,214 starters, 2.7% DNF rate, 2 timed checkpoints.
| Segment | km | Median | Middle half | Measured | Median passage | Still ranked |
|---|---|---|---|---|---|---|
| Courmayeur → La Suche | 6.5 | 1 h 34 | 1 h 19 – 1 h 49 | 1,186 | 1 h 34 | 1,194 |
| La Suche → Arrivée Courmayeur | 15.1 | 1 h 31 | 1 h 17 – 1 h 48 | 1,174 | 3 h 05 | 1,182 |
“Median passage” is elapsed time from the start, not a clock time: the clock time depends on the edition.
Where runners drop out. Courmayeur (20) · La Suche (12) · Arrivée Courmayeur (1) out of 33 total DNFs.
RAVIT record from the official timing of the 2024 edition, data from September 21, 2026.
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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 — Mont-Blanc - ETC
Weather for Mont-Blanc - ETC
The weather for Mont-Blanc - ETC 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 Mont-Blanc - ETC, hour by hour on the courseFrequently asked questions
How many checkpoints?
Mont-Blanc - ETC has 2 checkpoints: 2 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Courmayeur: 8.8 km and 0 m elevation gain. That's the one to load up for first.
What distance and elevation gain?
Mont-Blanc - ETC is 15 km long with 1204 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 1h59 for Mont-Blanc - ETC.
What's the weather forecast?
The weather for Mont-Blanc - ETC 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 Mont-Blanc - ETC?
RAVIT calculates your race plan at your UTMB Index: segment time, carbs, water and sodium at each aid station.
Your index is enough · arrival time and first checkpoints free