South Plateau Snowmobile Trail enters Idaho and connects with groomed trail network on Targhee National Forest. Also connects with Two Top Loop.
South Plateau Trail can be access from Electric Street right in West Yellowstone. This is a quieter trail and is recommended for the novice to intermediate snowmobiler. The trail runs along the boundary of Yellowstone National Park and is your best opportunity to view the moose of the region. You can ride this trail out and back, or link it up with one of the other trails to make a great loop ride. Be sure you know how long these loops are and where the nearest gas is along the way. (Be sure to pick up a map from the Chamber of Commerce or West Yellowstone businesses.)
The South Plateau heads south for 13 miles where it meets the Black Bear Cutoff (to Idaho) or 16.2 miles where is meets the Black Canyon Trail. It provides great views of the area's mountains, following creeks and rivers away from the crowds. There is an abundance of off-trail riding but make sure that you do not enter Yellowstone Park (the trail skirts the western edge of the Park).
There is a 5 mile groomed alternate route off the main trail south of town called Whiskey Loop Trail. This Loop leaves and re-enters the main South Plateau Trail.
Area Map: Gallatin National Forest Visitor Map