DateExpected
Mid March 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Halles du Lavoir, Bains-sur-Oust
Bains-sur-Oust, Ille-et-Vilaine
Countdown
March
The long one of the day: a 43 km loop with a gentle 950 m of climbing, started at midday. Runners get six hours to get round, so it's more steady grind than mountain slog.
Key facts
01Minimum age 20
026-hour time limit for the single loop
Create a free training plan for the Trail des 3 Chapelles 43 km
7-day free trial, no card required
The course
The route
Bains-sur-Oust
Distance43km
Total climb950m
StartElevation
0 kmDrag map to rotate39.5 km
Weather
Mid-March, Bains-sur-Oust
14°CTypical high
4°CTypical low
-4°CColdest in 20 years
29%Days with rain
Highs around 14°C and lows around 4°C, but it has dropped to -4°C. Rain on 29% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Organiser
OrganiserAssociation Trail des 3 Chapelles
Websitetrail3chapelles.fr
Instagram@traildes3chapelles
Running since1996
Training
Training for the Trail des 3 Chapelles 43 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 3 Chapelles 43 km plan targets
Typical sessions
43 km with 950 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 3 Chapelles 43 km plan.
7-day free trial, no card required.
Other races at Trail des 3 Chapelles
More events in March in France
Black Mountain TrailExpected Early March 2027 · Saint-Amans-Soult→Ceven'TrailSat, 6 Mar 2027 · Le Vigan→L'Ultra BaumeExpected Early March 2027 · Cuges-les-Pins→La MassingienneSat, 6 Mar 2027 · Massingy→Marathon de la ToureilleSat, 6 Mar 2027 · Le Vigan→Winter Trail RéallonExpected Early March 2027 · Réallon→
