Idaho’s mountains are rolling into the 2025–26 season with meaningful terrain expansions across the state, giving skiers and riders more to explore as the snow begins to fall.
The biggest addition comes from Sun Valley, which is entering its 90th winter with 90 acres of newly gladed terrainbetween Canyon, Exhibition, and Olympic. The work stems from the resort’s ongoing Bald Mountain Forest Stewardship Project — a collaboration with federal partners that improves forest health and reduces fire risk while opening up some of Baldy’s most engaging advanced lines. Sun Valley has developed more than 350 acres of glades in the past five years, and the new terrain continues that momentum. The resort is also introducing RFID access and expanded clinics, with Sunny’s Adventure Park debuting on Dollar Mountain.
Further south, Tamarack Resort is transforming the aftermath of the Rock Fire into opportunity. Roughly 60 acres of new advanced terrain south of Bliss will open this season, adding steep, technical skiing shaped by natural burn patterns. Tamarack also widened Waltz, its primary green run, upgraded snowmaking, and improved grooming on heavily used trails. Other updates include new chairlift loading ramps and expanded parking, part of the resort’s efforts to manage peak-day crowds and improve flow.
Close to home for Treasure Valley families, Bogus Basin continues to refine its terrain with additional glading in the Pine Creek and Bitterroot areas and a new beginner-friendly connection off Morning Star Express. The nonprofit mountain also piloted innovative snow-storage technology that preserved 11 acre-feet of snow from last winter — a hedge against early-season uncertainty.
In North Idaho, Silver Mountain expanded gladed terrain in the North Face Glades and extended Sheer Bliss, offering more fall-line skiing while improving overall mountain flow.
For sidecountry enthusiasts, Soldier Mountain plans to reopen 250 acres of guided access terrain, reached by TRAX side-by-side UTV or by bootpack routes. The terrain opened briefly last March and returns this season on select dates.
Elsewhere, Magic Mountain and Kelly Canyon have made targeted improvements to beginner areas and glades, rounding out a winter shaped by incremental but impactful growth across the Gem State’s ski landscape. Visit skiidaho.us for more details.