UTMB Mont-Blanc

Chamonix-Mont-Blanc, Auvergne-Rhône-Alpes, France

102.8 miles (165.4 km) · 32,566 ft elevation gain · Loop · trail · Race

Route facts

Distance	102.8 mi (165.4 km)
Elevation gain	32,566 ft (9,926 m)
Average gain	317 ft per mile (60 m per km)
Longest climb	8.3 mi, 4,449 ft of gain
Steepest climb grade	58.3%
Runnable	43% of the route
Climbs / descents	8 climbs, 7 descents
Profile shape	Up, then down
Difficulty score	17.2 of 100
Surface	trail
Route shape	Loop
Type	Race

Grade breakdown

Grade band	Share of route
Flat	20%
Mild uphill	7%
Moderate uphill	8%
Steep uphill	24%
Mild downhill	9%
Moderate downhill	7%
Steep downhill	24%

Questions about UTMB Mont-Blanc

How much elevation gain does UTMB Mont-Blanc have?

UTMB Mont-Blanc has 32,566 ft (9,926 m) of elevation gain over 102.8 miles (165.4 km). That averages 317 ft of gain per mile.

How difficult is UTMB Mont-Blanc?

The difficulty score for UTMB Mont-Blanc is 17.2 of 100. That is harder than 87.2% of routes at a similar distance. About 43% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on UTMB Mont-Blanc?

The longest climb on UTMB Mont-Blanc runs 8.3 miles (13.4 km) and gains 4,449 ft (1,356 m). The steepest climb grade on the route is 58.3%.