Grouse Mountain · Canada
Purgatory
Black (advanced)
46
Very good
85 m
Length
29 m
Vertical drop
1220 m
Starts at
1191 m
Ends at
29%
Avg gradient
39.9%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Purgatory is a black (advanced) run at Grouse Mountain measuring 85 m, dropping 29 m from 1220 m down to 1191 m. It averages a 29% gradient, steepening to around 39.9% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 46/100 — Very good
Vertical1/30
Length0/25
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 Purgatory on the map
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