Les 3 Vallées · France
Biollay
Blue (easy)
65
Excellent
1.7 km
Length
355 m
Vertical drop
2216 m
Starts at
1861 m
Ends at
20.6%
Avg gradient
40.9%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Biollay is a blue (easy) run at Les 3 Vallées measuring 1.7 km, dropping 355 m from 2216 m down to 1861 m. It averages a 20.6% gradient, steepening to around 40.9% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 65/100 — Excellent
Vertical12/30
Length9/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a blue (easy) run should feel like, so every difficulty class can reach 100. Methodology
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