Les 3 Vallées · France
Jean Blanc
Black (advanced)Grooming: classic
78
Outstanding
2.1 km
Length
674 m
Vertical drop
2135 m
Starts at
1461 m
Ends at
32.1%
Avg gradient
64.6%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Jean Blanc is a black (advanced) run at Les 3 Vallées measuring 2.1 km, dropping 674 m from 2135 m down to 1461 m. It averages a 32.1% gradient, steepening to around 64.6% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 78/100 — Outstanding
Vertical22/30
Length10/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a black (advanced) run should feel like, so every difficulty class can reach 100. Methodology
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