DateExpected
Late September 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Champ du Savoy, Chamonix-Mont-Blanc, France
Chamonix-Mont-Blanc, Haute-Savoie
Countdown
September
The short loop out of Chamonix: 18 km with 1,350 m of climbing, a steep little mountain outing and a good first taste of the TAR weekend.
Key facts
01Fully autonomous: carry everything you need for the whole route
025 hour time limit
03Open to runners born in 2007 or earlier, licensed or not
Create a free training plan for the Trail des Aiguilles Rouges 18 km
7-day free trial, no card required
The course
The route
Chamonix-Mont-Blanc
Distance18km
Total climb1,350m
StartElevation
0 kmDrag map to rotate16.4 km
Weather
Late-September, Chamonix-Mont-Blanc
14°CTypical high
4°CTypical low
-5°CColdest in 20 years
42%Days with rain
Highs around 14°C and lows around 4°C, but it has dropped to -5°C. Rain on 42% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Léane ROSSAT02:19:127.8 km/h
02Cindell VERNEY02:25:567.4 km/h
03Anaïs BOUCANSAUD02:27:167.3 km/h
182
Women finishers
3:46:29
Median time
4.8 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
OrganiserChamonix Mont-Blanc Marathon (CMBM)
Websiteaiguillesrouges.fr
Instagram@traildesaiguillesrouges
Running since2007
Training
Training for the Trail des Aiguilles Rouges 18 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 Trail des Aiguilles Rouges 18 km plan targets
Typical sessions
18 km with 1,350 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 Trail des Aiguilles Rouges 18 km plan.
7-day free trial, no card required.
Other races at Trail des Aiguilles Rouges
More events in September in France
Alps DivideExpected Early September 2027 · Alpine traverse → Menton→L'Échappée MICHELIN Paris-ClermontExpected Early September 2027 · Clermont-Ferrand→Le Trail du GraalExpected Early September 2027 · Néant-sur-Yvel→Saint-Jeoire Trail FestivalExpected Early September 2027 · Saint-Jeoire→Trail de la MeijeExpected Early September 2027 · Commensacq→Ultra Trail Haut-Koenigsbourg®Expected Early September 2027 · Kintzheim→
