Zinal / Grimentz · Switzerland
Les Couloirs supérieure
Black (advanced)Grooming: classic
52
Very good
880 m
Length
184 m
Vertical drop
2846 m
Starts at
2661 m
Ends at
20.5%
Avg gradient
45.3%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Les Couloirs supérieure is a black (advanced) run at Zinal / Grimentz measuring 880 m, dropping 184 m from 2846 m down to 2661 m. It averages a 20.5% gradient, steepening to around 45.3% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 52/100 — Very good
Vertical6/30
Length4/25
Gradient character22/25
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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