How long does it take to thru-hike the Montana Trail 406?

The length of your border-to-border adventure will depend on your hiking style, how many rest days you take, and if you do any peak bagging or take alternate routes along the way. If you hike an average of 15 miles a day and don’t take any rest days or alternate routes, you will finish in around 110 days. Most hikers seem to generally plan on a three-month adventure.