L'Alpe du Grand Serre · France
Serriou
Red (intermediate)
46
Very good
100 m
Length
18 m
Vertical drop
1470 m
Starts at
1452 m
Ends at
14.4%
Avg gradient
20.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Serriou is a red (intermediate) run at L'Alpe du Grand Serre measuring 100 m, dropping 18 m from 1470 m down to 1452 m. It averages a 14.4% gradient, steepening to around 20.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 46/100 — Very good
Vertical1/30
Length1/25
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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