Roc d'Enfer · France
Graydon
Blue (easy)Grooming: classic
49
Very good
714 m
Length
135 m
Vertical drop
1788 m
Starts at
1653 m
Ends at
18.7%
Avg gradient
32.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Graydon is a blue (easy) run at Roc d'Enfer measuring 714 m, dropping 135 m from 1788 m down to 1653 m. It averages a 18.7% gradient, steepening to around 32.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Watch for an uphill section: 25 m of climb about 25 m in.
Bonvo Slope Score: 49/100 — Very good
Vertical5/30
Length4/25
Gradient character25/25
Flow16/20
Scored from the run's real geometry — steepness is judged against what a blue (easy) run should feel like, so every difficulty class can reach 100. Methodology
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