Introduction

Big Sky's activity list splits cleanly by season, with the mountain itself doing double duty as a ski resort in winter and a lift-served hiking and biking hub in summer.

Winter: Skiing Beyond the Marketing Line

Big Sky Resort markets itself as the "Biggest Skiing in America," a claim built on roughly 5,800 skiable acres (official materials have cited figures up to 5,850) spread across Lone Mountain and neighboring Andesite Mountain — a total that grew substantially when Big Sky absorbed the adjacent Moonlight Basin resort in October 2013. The showpiece is the Lone Peak Tram, which climbs to the 11,166-foot summit of Lone Mountain; it was rebuilt in December 2023 with 75-person cabins, up from the original 15-person tram installed in 1995. As of the 2025-26 season, tram access is included in every standard lift ticket rather than sold separately — worth knowing if you're working from an older blog post that still describes it as a paid add-on. The acreage claim is real, but a large share of Big Sky's terrain is genuinely expert-level; casual intermediate skiers shouldn't assume the "biggest" resort in America is the easiest one to spend a full week on.

Photo: Goldman60 / Wikimedia Commons (CC BY 3.0)

Summer: Gondolas, Hiking, and a Bike Park

With the resort's June 13-September 13, 2026 summer season running, the Explorer Gondola (newly opened December 2025), Lone Peak Tram, and Ramcharger 8 operate for scenic rides and lift-served mountain biking. On the ground, Ousel Falls Trail — an easy roughly 1.6-mile round trip from a trailhead about two miles down Ousel Falls Road from Town Center — is the low-effort option, following the Gallatin River's South Fork to a waterfall. Beehive Basin Trail is the harder, more rewarding alternative: a 6.9-mile out-and-back starting near 8,000 feet that climbs into an alpine basin with wildflower meadows and a glacial lake, best hiked July through August once the snow clears.

Photo: Cmhealy / Wikimedia Commons (CC BY-SA 4.0)

Yellowstone Day Trips

Big Sky works reasonably well as a Yellowstone base for the park's western side: it's roughly 50-56 minutes to the West Entrance and the town of West Yellowstone, and about 1 hour 35 minutes to Old Faithful. That's a long day trip, not a quick one — build in a full day, not an afternoon, if Old Faithful is the goal.

Photo: Supercarwaar / Wikimedia Commons (CC BY-SA 4.0)

What's Actually Private

The Yellowstone Club and the Spanish Peaks Mountain Club are both real, both physically part of the Big Sky area, and both completely closed to the public without a member or resident host — no walk-up tours, no public golf. Fly fishing on the Gallatin River, by contrast, is genuinely open to everyone: a walk/wade blue-ribbon trout stream with public roadside access along US-191, best June through October.

Sources and Verification Notes

Lift and terrain details verified against bigskyresort.com and POWDER's coverage of the tram-fee change; trail details cross-checked against Big Sky Community Organization (bsco.org) and Outside Bozeman trail listings, current as of August 2026.