Les Houches (Chamonix) · France
Grands Bois
Red (intermediate)
46
Very good
97 m
Length
13 m
Vertical drop
1796 m
Starts at
1783 m
Ends at
12.9%
Avg gradient
15.7%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Grands Bois is a red (intermediate) run at Les Houches (Chamonix) measuring 97 m, dropping 13 m from 1796 m down to 1783 m. It averages a 12.9% gradient.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 46/100 — Very good
Vertical0/30
Length0/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a red (intermediate) run should feel like, so every difficulty class can reach 100. Methodology
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