Praz de Lys Sommand · France
Mouille Noire
Red (intermediate)Grooming: classic
53
Very good
594 m
Length
155 m
Vertical drop
1580 m
Starts at
1425 m
Ends at
25.9%
Avg gradient
51.4%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Mouille Noire is a red (intermediate) run at Praz de Lys Sommand measuring 594 m, dropping 155 m from 1580 m down to 1425 m. It averages a 25.9% gradient, steepening to around 51.4% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 53/100 — Very good
Vertical5/30
Length3/25
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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