Les 3 Vallées · France
Jantzen
Red (intermediate)
42
Very good
390 m
Length
138 m
Vertical drop
1977 m
Starts at
1839 m
Ends at
34.5%
Avg gradient
52.4%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Jantzen is a red (intermediate) run at Les 3 Vallées measuring 390 m, dropping 138 m from 1977 m down to 1839 m. It averages a 34.5% gradient, steepening to around 52.4% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 42/100 — Very good
Vertical5/30
Length2/25
Gradient character16/25
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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