Tags: Mountain Pass.
Lolo Pass elevation 5233 feet (1595 m) is a mountain pass in the western United States in the Bitterroot Range of the northern Rocky Mountains. It is on the border between the states of Montana and Idaho approximately 40 miles (64 km) west-southwest of Missoula Montana.The pass is the highest point of the historic Lolo Trail between the Bitterroot Valley in Montana and the Weippe Prairie in Idaho.