Bolton Valley Resort · United States
Spillway
Black (advanced)
53
Very good
460 m
Length
157 m
Vertical drop
911 m
Starts at
754 m
Ends at
33.1%
Avg gradient
52.7%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Spillway is a black (advanced) run at Bolton Valley Resort measuring 460 m, dropping 157 m from 911 m down to 754 m. It averages a 33.1% gradient, steepening to around 52.7% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 53/100 — Very good
Vertical5/30
Length2/25
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
Explore Spillway on the map
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Ski Spillway with the map in your pocket — offline.
Downloaded resort maps and your own run recording can work without mobile service. Live group positions require connectivity. Free to download; Premium features are available.