Le Grand Bornand · France
La Noire du Lachat
Black (advanced)
51
Very good
631 m
Length
340 m
Vertical drop
2005 m
Starts at
1665 m
Ends at
52.2%
Avg gradient
80.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
La Noire du Lachat is a black (advanced) run at Le Grand Bornand measuring 631 m, dropping 340 m from 2005 m down to 1665 m. It averages a 52.2% gradient, steepening to around 80.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 51/100 — Very good
Vertical11/30
Length3/25
Gradient character16/25
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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