How long is this historic east–west, large-wheeled wagon route and emigrant trail in the United States on whch Barlow Pass is on?
Oregon Trail The Oregon Trail is a 2170 mi historic east–west, large-wheeled wagon route and emigrant trail in the United States that connected the Missouri River to valleys in Oregon. The eastern part of the Oregon Trail spanned part of the future state of Kansas, and nearly all of what are now the states of Nebraska and Wyoming. The western half of the trail spanned most of the future states of Idaho and Oregon.
Theodore Roosevelt International Highway The Theodore Roosevelt International Highway was a transcontinental North American highway, from the era of the auto trails, through the United States and Canada that ran from Portland, Maine, to Portland, Oregon. Its length was about 4060 mi .