Roc d'Enfer · France
Le Grand Souvroz, Chemin de la Chèvrerie à Foron
Red (intermediate)
44
Very good
395 m
Length
40 m
Vertical drop
1311 m
Starts at
1271 m
Ends at
10%
Avg gradient
19%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Le Grand Souvroz, Chemin de la Chèvrerie à Foron is a red (intermediate) run at Roc d'Enfer measuring 395 m, dropping 40 m from 1311 m down to 1271 m. It averages a 10% gradient, steepening to around 19% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 44/100 — Very good
Vertical1/30
Length2/25
Gradient character21/25
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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