Events/UTMB — Ultra-Trail du Mont-Blanc

UTMB — Ultra-Trail du Mont-Blanc

Running

Date

Fri, 28 Aug 2026

Venue

Chamonix, France -> loop through Italy & Switzerland -> Chamonix

Countdown

August

Distance

174km

Total climb

10,000m

The benchmark of the sport. A single ~174km loop of the Mont-Blanc massif from Chamonix with ~10,000m of climbing, run across France, Italy and Switzerland.

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The course

The route

An anti-clockwise loop of the Mont-Blanc massif, starting and finishing in Chamonix at ~1,035m and climbing over ten major cols. The high point is the 2,537m Grand Col Ferret on the Italy-Switzerland border.

Weather

Late-August, Chamonix

18°CTypical high

7°CTypical low

-1°CColdest in 20 years

38%Days with rain

Highs around 18°C and lows around 7°C, but it has dropped to -1°C. Rain on 38% of days. Pack for the cold end, not the average.

NASA POWER data, 2006-2025, the week either side of race day

Training

Training for the UTMB — Ultra-Trail du Mont-Blanc

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.icu

A day-plus in the high Alps

Typical sessions

Relentless climbing and descending with no long flat relief across the whole loop.

Technical alpine descents late in the race, when your quads are already wrecked.

Two nights on your feet, cold and sleep-deprived at altitude on the exposed cols.

Hot valley sections early, then near-freezing wind chill up on the high passes.

What your weeks look like

Typical sessions

Long mountain runs building progressively from 3h to a single 7-10h day in the hills.

Back-to-back weekends: a long Saturday, then running Sunday on pre-fatigued legs.

Dedicated downhill repeats to condition the quads, plus power-hike repeats with poles.

Night runs with your headtorch and full-kit, full-fuelling rehearsals in the specialise block.

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

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