Zinal / Grimentz · Switzerland
Lona supérieure
Black (advanced)Grooming: classic
61
Excellent
1.3 km
Length
290 m
Vertical drop
2868 m
Starts at
2578 m
Ends at
22.3%
Avg gradient
60.9%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Lona supérieure is a black (advanced) run at Zinal / Grimentz measuring 1.3 km, dropping 290 m from 2868 m down to 2578 m. It averages a 22.3% gradient, steepening to around 60.9% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 61/100 — Excellent
Vertical10/30
Length6/25
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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