DateExpected
Early September 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Zinal, Val d’Anniviers
Grône, Sierre
Countdown
September
A 3am start and nearly 5,800 m of climbing packed into 59 km. This is a proper mountain ultra, and you'll spend the first hours running by headtorch.
Key facts
01Entry needs 4 ITRA points from the last 2 years, across no more than 2 races
0216-hour cut-off for the single loop
033am start, so a headtorch is essential
Create a free training plan for the Trail du Besso 59 km
7-day free trial, no card required
The course
The route
Grône
Distance59km
Total climb5,800m
StartElevation
0 kmDrag map to rotate50.1 km
Weather
Early-September, Grône
13°CTypical high
4°CTypical low
-6°CColdest in 20 years
42%Days with rain
Highs around 13°C and lows around 4°C, but it has dropped to -6°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
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Trail du Besso 59 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 du Besso 59 km plan targets
Typical sessions
59 km with 5,800 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
Hill reps and vert to prepare the climbs and descents
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 du Besso 59 km plan.
7-day free trial, no card required.
More events in September in Switzerland
SwissPeaks TrailExpected Early September 2027 · Le Bouveret→SwissPeaks UltraExpected Early September 2027 · Valais→Grächen BerglaufSat, 4 Sept 2027 · Grächen→Swiss Cycling AlpenbrevetExpected Early September 2027 · Andermatt→SwissPeaks MarathonExpected Early September 2027 · Valais→Trail du BessoExpected Early September 2027 · Grône→
