La Rosière · France
Marcassin
Black (advanced)Grooming: backcountry
63
Excellent
1.1 km
Length
359 m
Vertical drop
1891 m
Starts at
1533 m
Ends at
31.9%
Avg gradient
56.1%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Marcassin is a black (advanced) run at La Rosière measuring 1.1 km, dropping 359 m from 1891 m down to 1533 m. It averages a 31.9% gradient, steepening to around 56.1% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 63/100 — Excellent
Vertical12/30
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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