L'Alpe du Grand Serre · France
Auche
Red (intermediate)
64
Excellent
1.5 km
Length
350 m
Vertical drop
1784 m
Starts at
1434 m
Ends at
23%
Avg gradient
51.6%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Auche is a red (intermediate) run at L'Alpe du Grand Serre measuring 1.5 km, dropping 350 m from 1784 m down to 1434 m. It averages a 23% gradient, steepening to around 51.6% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 64/100 — Excellent
Vertical12/30
Length8/25
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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