Fossil Creek starts at the north end of Wickersham Creek Trail
at the Borealis-LeFevre Cabin on the north side of Beaver Creek. As it heads north, it begins with a broad, open valley and black spruce forests. It then passes through a burn area before a climb to the Fossil Creek drainage.
Just around the halfway mark, the route intersects with Fossil Gap Trail
. Continue straight to experience a spectacular section of trail that heads past jagged limestone cliffs and through white spruce forests.
The northern terminus of the trail is a three-way intersection with Windy Creek Trail
and Cache Mountain Loop
at the Windy Gap Cabin.