La Sambuy Seythenex · France
Les Bosses
Black (advanced)
51
Very good
282 m
Length
123 m
Vertical drop
1383 m
Starts at
1260 m
Ends at
41%
Avg gradient
59.3%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Les Bosses is a black (advanced) run at La Sambuy Seythenex measuring 282 m, dropping 123 m from 1383 m down to 1260 m. It averages a 41% gradient, steepening to around 59.3% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 51/100 — Very good
Vertical4/30
Length1/25
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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