Les Sybelles · France
Perrons Bas
Black (advanced)
62
Excellent
1.0 km
Length
352 m
Vertical drop
2036 m
Starts at
1684 m
Ends at
33.6%
Avg gradient
59.1%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Perrons Bas is a black (advanced) run at Les Sybelles measuring 1.0 km, dropping 352 m from 2036 m down to 1684 m. It averages a 33.6% gradient, steepening to around 59.1% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 62/100 — Excellent
Vertical12/30
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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