Afton Alps · United States
Sally's Valley
Black (advanced)
48
Very good
183 m
Length
52 m
Vertical drop
269 m
Starts at
218 m
Ends at
25.8%
Avg gradient
38.8%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Sally's Valley is a black (advanced) run at Afton Alps measuring 183 m, dropping 52 m from 269 m down to 218 m. It averages a 25.8% gradient, steepening to around 38.8% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 48/100 — Very good
Vertical2/30
Length1/25
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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