Porters Ski Area · New Zealand
Big Mama
Black (advanced)
51
Very good
898 m
Length
495 m
Vertical drop
1845 m
Starts at
1350 m
Ends at
55%
Avg gradient
78.3%
Max gradient
sustained 50 m
Elevation profile
Run analysis
Big Mama is a black (advanced) run at Porters Ski Area measuring 898 m, dropping 495 m from 1845 m down to 1350 m. It averages a 55% gradient, steepening to around 78.3% at its most sustained pitch.
Snowboard-friendly: no significant flat or uphill sections detected along the descent.
Bonvo Slope Score: 51/100 — Very good
Vertical16/30
Length4/25
Gradient character11/25
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 Big Mama on the map
Loading interactive map…
Ski Big Mama with the map in your pocket — offline.
Download the resort once in Bonvo Ski Maps and every run, lift and your friends' live positions keep working in airplane mode. Free this season.