Roc d'Enfer · France
La Grande Terche
Red (intermediate)
58
Excellent
928 m
Length
258 m
Vertical drop
1509 m
Starts at
1250 m
Ends at
27.1%
Avg gradient
46.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
La Grande Terche is a red (intermediate) run at Roc d'Enfer measuring 928 m, dropping 258 m from 1509 m down to 1250 m. It averages a 27.1% gradient, steepening to around 46.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 58/100 — Excellent
Vertical9/30
Length5/25
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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