The ADT crosses 15 mountain passes over 9,000 feet high including four that are above 12,000 feet. The route crosses the Continental Divide twice and uses portions of the Continental Divide National Scenic Trail and the Colorado Trail. Weather conditions can change suddenly and the effects of high altitude can be extreme. Users must guard against dehydration and hypothermia. The official route requires backpacking and camping in remote areas.
Some parts prohibit bicycles and some terrain is unsafe for bicycles.
Contact the State coordinator for advice on alternate routes to suit your particular mode of travel and capabilities. The total length of the ADT in Colorado is 1,145 miles. The northern route from Nebraska to Utah is 768 miles long. The southern route from Kansas to Utah is 912 miles. 227 miles 5.