Les 3 Vallées · France
Couloir Emile Allais
Freeride (unpatrolled)Grooming: backcountry
53
Very good
321 m
Length
184 m
Vertical drop
2633 m
Starts at
2449 m
Ends at
56.6%
Avg gradient
82.7%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Couloir Emile Allais is a freeride (unpatrolled) run at Les 3 Vallées measuring 321 m, dropping 184 m from 2633 m down to 2449 m. It averages a 56.6% gradient, steepening to around 82.7% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 53/100 — Very good
Vertical6/30
Length2/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a freeride (unpatrolled) run should feel like, so every difficulty class can reach 100. Methodology
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