The Big Sky Traildy-logo-cropped Previous Next Place Categories: Snowmobile TrailsInformationPhotosThe Big Sky Trail provides some of the best backcountry snowmobiling in Montana. This challenging 110-mile trail begins just north of West Yellowstone. While the first portion is groomed, the trail quickly turns into an un-groomed powder experience. This area has open bowls, deep fields of snow, and outstanding hill climbing opportunities.Trail Categories SnowmobileTrail Condition Groomed Ungroomed MarkedHighest Elevation feetElevation Gain feetRoundtrip Distance milesOrganization Hebgen Lake District of the Custer-Gallatin National Forest Website Phone: (406) 823-6961dy-logo-cropped PreviousNext