DateExpected
Late June 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Chamonix-Mont-Blanc, Haute-Savoie, France
Chamonix-Mont-Blanc, Haute-Savoie
Countdown
June
Under 4 km, but 1,000 m straight up to Planpraz. It's a vertical kilometre, all about the climb, raced against the clock on your own.
Key facts
01Poles prohibited
02Individual time trial, starts every 15 seconds
03Open from junior category
Create a free training plan for the Marathon du Mont-Blanc 4 km
7-day free trial, no card required
The course
The route
Chamonix-Mont-Blanc
Distance3.8km
Total climb1,000m
StartElevation
0 kmDrag map to rotate3.8 km
Weather
Late-June, Chamonix-Mont-Blanc
18°CTypical high
8°CTypical low
1°CColdest in 20 years
51%Days with rain
Highs around 18°C and lows around 8°C, but it has dropped to 1°C. Rain on 51% of days.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Christel DEWALLE00:44:065.2 km/h
02Lucille GERMAIN00:45:235.0 km/h
03Jeanne RICHARD00:45:425.0 km/h
134
Women finishers
1:20:39
Median time
2.8 km/h
Median speed
Women · 2026 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserClub des Sports de Chamonix
Websitemarathonmontblanc.fr
Instagram@marathondumontblanc
Running since1979
Training
Training for the Marathon du Mont-Blanc 4 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Marathon du Mont-Blanc 4 km plan targets
Typical sessions
4 km with 1,000 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Marathon du Mont-Blanc 4 km plan.
7-day free trial, no card required.
Other races at Marathon du Mont-Blanc
More events in June in France
Ultr'ArverneExpected Early June 2027 · Ambert→La Chaussée des GéantsSat, 5 Jun 2027 · Thueyts village→La Route de Bourgogne avec Claudio ChiappucciSat, 5 Jun 2027 · Arnay-le-Duc→La Transju’TrailsSat, 5 Jun 2027 · Les Rousses→La Traversée des DentellesSat, 5 Jun 2027 · Gigondas→Trail du PoulduExpected Early June 2027 · Clohars-Carnoët→
