Section 6 of the CDT in Montana travels for 29.1 miles from I-90 to another crossing with I-15 that is much farther north than the previous crossing. Along the way, the trail passes Goldflint Mountain, Delmo Lake, Whitetail Peak, and Nez Perce Road.
MT
http://www.tripleblaze.com/trail.php?c=3&i=5218