Grouse Mountain · Canada
Inferno
Black (advanced)
54
Very good
684 m
Length
281 m
Vertical drop
1154 m
Starts at
873 m
Ends at
40%
Avg gradient
67%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Inferno is a black (advanced) run at Grouse Mountain measuring 684 m, dropping 281 m from 1154 m down to 873 m. It averages a 40% gradient, steepening to around 67% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Watch for an uphill section: 25 m of climb about 675 m in.
Bonvo Slope Score: 54/100 — Very good
Vertical9/30
Length3/25
Gradient character25/25
Flow16/20
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 Inferno on the map
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