How long is this historic east–west, large-wheeled wagon route and emigrant trail in the United States on whch Barlow Pass is on?
Barlow Pass (Oregon) Barlow Pass is a 4155 ft mountain pass in the Cascades in Oregon, on the Oregon Trail, and a major milestone of the Barlow Road. It is the crest of the Cascade Mountains: the dividing line between watersheds of the Deschutes River and those that flow into the Sandy River.
South Pass (Wyoming) South Pass (elevation 7,412 feet (2,259 m) and 7,550 feet (2,300 m)) is the collective term for two mountain passes on the Continental Divide, in the Rocky Mountains in southwestern Wyoming. The passes are located in a broad low region, 35 miles (56 km) wide, between the Wind River Range to the north and the Oregon Buttes and Great Divide Basin to the south, in southwestern Fremont County, approximately 35 miles (56 km) SSW of Lander. South Pass is the lowest point on the Continental Divide between the Central and Southern Rocky Mountains. The passes furnish a natural crossing point of the Rockies. The historic pass became the route for emigrants on the Oregon, California, and Mormon trails to the West during the 19th century. It has been designated as a U.S. National Historic Landmark.