Les 3 Vallées · France
Portette
Red (intermediate)
66
Excellent
1.6 km
Length
385 m
Vertical drop
2791 m
Starts at
2406 m
Ends at
24.5%
Avg gradient
49.7%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Portette is a red (intermediate) run at Les 3 Vallées measuring 1.6 km, dropping 385 m from 2791 m down to 2406 m. It averages a 24.5% gradient, steepening to around 49.7% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 66/100 — Excellent
Vertical13/30
Length8/25
Gradient character25/25
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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