This route tracks all the way down and back through the iconic Bitterroot Valley, starting in Missoula right at the beginning of the Bitterroot Trail. It is a dedicated paved trail the whole way. The trail ends in Hamilton. It travels the whole Bitterroot trail, with spectacular views of the snow-capped Bitterroot Mountains the whole way. You are encouraged to add on an extra 2.9 mile warm-up to make it an even 50, or 5.8 for an out & back 100!  (The bonus miles don't count for the FKT, but you can include the your 50 or 100 mile time in your write-up.)