Le Grand Bornand · France
Les lanches
Red (intermediate)Grooming: classic
58
Excellent
1.1 km
Length
218 m
Vertical drop
1639 m
Starts at
1421 m
Ends at
20.3%
Avg gradient
34.3%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Les lanches is a red (intermediate) run at Le Grand Bornand measuring 1.1 km, dropping 218 m from 1639 m down to 1421 m. It averages a 20.3% gradient, steepening to around 34.3% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 58/100 — Excellent
Vertical7/30
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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