Buttermilk · United States
Ptarmigan
Red (intermediate)Grooming: classic
61
Excellent
1.2 km
Length
297 m
Vertical drop
2963 m
Starts at
2666 m
Ends at
25.3%
Avg gradient
36.9%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Ptarmigan is a red (intermediate) run at Buttermilk measuring 1.2 km, dropping 297 m from 2963 m down to 2666 m. It averages a 25.3% gradient, steepening to around 36.9% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 61/100 — Excellent
Vertical10/30
Length6/25
Gradient character25/25
Flow20/20
Scored from the run's real geometry — steepness is judged against what a red (intermediate) run should feel like, so every difficulty class can reach 100. Methodology
Explore Ptarmigan on the map
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