From Dillon, take I-15 north 12 miles to the Apex exit, where you turn west and travel the Birch Creek gravel road for 7.5 miles to the Western Montana Environmental Center turnoff. (Depending on snow conditions, you may have to park at this turnoff.) Cross the bridge and take the first turn right on the Thief Creek Road. The cabin is about .25 mile to the west at Thief Creek.