East of Swan Lake at the south end of Hungry Horse Reservoir, the East Side Trail (#80) along the South Fork of the Flathead River is a rolling meandering mountain bike ride up to the edge of the Bob Marshall Wilderness. This 16 mile round-trip singletrack winds through dryland ponderosa and lodgepole pine forest with great vistas of the river below. The brushy understory and rocky outcroppings are perfect grizzley, moose and mountain lion habitat.
To reach the mountain biking trailhead from Hungry Horse on US 2, head south on FS895, near the ranger station, across the damn. Continue south for 55 miles to the Spotted Bear Ranger Station parking area. Start riding further down the road to pick up the trail on the right just past the corral.
Other trails in the area include the Spotted Bear Creek Trail (#88) and the Spotted Bear Lookout Trail (#84).
Overall, East Side South Fork Trail is the 21st most popular mountain bike trail of all 32 mountain biking rides in Montana.