Big Sky Resort · United States
Sonny Boy
Red (intermediate)
50
Very good
473 m
Length
72 m
Vertical drop
2681 m
Starts at
2609 m
Ends at
15.2%
Avg gradient
19.6%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Sonny Boy is a red (intermediate) run at Big Sky Resort measuring 473 m, dropping 72 m from 2681 m down to 2609 m. It averages a 15.2% gradient, steepening to around 19.6% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 50/100 — Very good
Vertical2/30
Length2/25
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 Sonny Boy on the map
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