Le Grand Bornand · France
La Noire du Lachat
Black (advanced)
54
Very good
566 m
Length
172 m
Vertical drop
1608 m
Starts at
1435 m
Ends at
29.9%
Avg gradient
60.1%
Max gradient
sustained 50 m
Elevation profile
Run analysis
La Noire du Lachat is a black (advanced) run at Le Grand Bornand measuring 566 m, dropping 172 m from 1608 m down to 1435 m. It averages a 29.9% gradient, steepening to around 60.1% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 54/100 — Very good
Vertical6/30
Length3/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a black (advanced) run should feel like, so every difficulty class can reach 100. Methodology
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