The Byway begins at the community of Winifred which is located 38 miles north of Lewistown on Montana Secondary 236. The Byway consists of gravel roads and unimproved roads that become totally impassable when wet. Check the weather, and do not attempt to travel the Byway if wet weather is threatening. Driving time is approximately 2 to 3 hours and the length of the drive is about 80 miles. The Byway leads the visitor to scenes overlooking the Upper Missouri National Wild and Scenic River. It was designated in 1976 to preserve the very values that are so abundant along the Byway. The Wild & Scenic River from Fort Benton down river to the James Kipp Recreation area is the foremost component of the Lewis and Clark National Historic Trail. The Byway northeast from Winifred to Deweese Ridge closely follows the Nez Perce National Historic Trail. Under ideal conditions, a two wheel drive vehicle can negotiate the entire Back Country Byway, but a vehicle with high clearance is recommended. Large RVs should not attempt access to the Byway from Highway 191, and should not attempt the Two Calf Creek crossing or any of the side roads off of the Byway. If conditions are less that ideal a four wheel drive vehicle is recommended.