Race calendar › Chamonix
⛰️ Marathon du Mont-Blanc
Marathon du Mont-Blanc takes place on 27/06/2027 in Chamonix (Haute-Savoie). 42 km. That's in 266 days.
A training plan built for this date, adjusted to your form every week. 1 month free, no card required.
| Date | 27/06/2027 |
| Location | Chamonix |
| Discipline | Trail running |
| Distances | 42 km |
| Country | Haute-Savoie |
The weather to expect
Over the past 5 years, around 27/06 in Chamonix, temperatures averaged 11.9 to 22.0 °C, with 60% rainy days (55 readings). That's the seasonal trend, not a forecast — check the actual outlook in the week before the race.
Your season, taking shape
Add races below: your season is built right here, no account needed.
Add races below: your season is built right here, no account needed.
Training for Marathon du Mont-Blanc
38 weeks remain before 27/06/2027. That is exactly the window your plan is built on.
A sound build works backwards from race day: a base block, a race-specific block at goal pace, then a taper so you arrive fresh. Sports Coach AI does that maths for you, adjusts every week to your actual form, and sends a detailed brief (pacing, nutrition, gear) before the start. On a trail, vertical gain matters more than distance: train the descents as much as the climbs, and rehearse your fuelling in training.