The Big Couloir: An Icon of Montana’s Big Sky Terrain
A Descent Defined by Bold Exposure
Located at Big Sky Resort in Montana, USA, the Big Couloir is one of the most recognized
inbounds lines in North America. Starting around 3,400 meters (≈11,166 feet) and
descending to approximately 2,977 meters (≈9,766 feet), it offers roughly
423 meters (≈1,400 feet) of vertical. Known for its sustained
45 to 50 degree steepness, the Big Couloir is a true test piece for advanced skiers looking
to challenge themselves in a wide open, exposed setting.
A Couloir of Pure Continuity
The entrance at the top is broad and straightforward, leading immediately into a steep headwall.
From there, the line remains consistent and uninterrupted with no narrow chokes or sudden
transitions. It is a clean fall line that allows for long, controlled arcs all the way down.
The exposure is part of the thrill, with every turn framed by the wide open face of Lone Peak.
Getting There: Tram Access and a Short Walk
Accessing the Big Couloir is simple thanks to the Lone Peak Tram. From the tram’s summit station,
it is only a short walk of a few minutes to reach the entrance. Ski patrol requires check in and appropriate
avalanche gear, but there is no complex approach. It is a direct and efficient route from the tram to the drop in.
Snow, Season, and Real Conditions
The Big Couloir is typically skied from mid winter through early spring, with peak conditions
occurring between January and March. Expect around 423 meters (≈1,400 feet)
of vertical and a slope that consistently sits in the 45 to 50 degree range. Snow conditions vary
widely depending on weather, ranging from powder to chalk to firm, icy surfaces.
Difficulty: A Test of Exposure and Control
We rate the Big Couloir around 8 out of 10 in difficulty. It is not defined by technical
obstacles but by its exposure and sustained steepness. Maintaining composure and solid technique
is essential, as every turn matters on such a prominent face.
Why the Big Couloir Matters
The Big Couloir is a rite of passage for many skiers visiting Big Sky. It is more than a steep run;
it is an immersive big mountain experience where the grandeur of Lone Peak is fully on display. From the summit tram
to the final runout, the Big Couloir delivers a bold, unforgettable descent that embodies the spirit of Montana skiing.