La Rosière · France
Roc Noir
Red (intermediate)
60
Excellent
1.0 km
Length
306 m
Vertical drop
2187 m
Starts at
1882 m
Ends at
29.8%
Avg gradient
44.4%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Roc Noir is a red (intermediate) run at La Rosière measuring 1.0 km, dropping 306 m from 2187 m down to 1882 m. It averages a 29.8% gradient, steepening to around 44.4% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 60/100 — Excellent
Vertical10/30
Length5/25
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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