Les 3 Vallées · France
Grande Rosière
Black (advanced)
66
Excellent
1.2 km
Length
462 m
Vertical drop
2473 m
Starts at
2011 m
Ends at
39.3%
Avg gradient
58.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Grande Rosière is a black (advanced) run at Les 3 Vallées measuring 1.2 km, dropping 462 m from 2473 m down to 2011 m. It averages a 39.3% 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: 66/100 — Excellent
Vertical15/30
Length6/25
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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