Les 3 Vallées · France
Bosses
Black (advanced)Grooming: mogul
61
Excellent
994 m
Length
342 m
Vertical drop
2002 m
Starts at
1660 m
Ends at
34.2%
Avg gradient
58.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Bosses is a black (advanced) run at Les 3 Vallées measuring 994 m, dropping 342 m from 2002 m down to 1660 m. It averages a 34.2% gradient, steepening to around 58.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 61/100 — Excellent
Vertical11/30
Length5/25
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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