This trail circles Devils Tower, you can find the trailhead near the visitor center.
South Dakota Trails / State Parks
Dakota Point Trailhead
BHNF Trail #9: Sunday Gulch
Spearfish Canyon Nature Area
Hell Canyon Trail
BHNF Trail #48: Mount Roosevelt
Deadwood Trailhead
Lakota Lake Trailhead
Chief White Crane Recreation Area
BHNF Trail #66: Old Baldy Trail
Pelican Lake Recreation Area
Springfield Recreation Area
BHNF Trail #9: Harney Peak North
Custer State Park
BHNF Trail #79: Rimrock Trails
BHNF Trail #40: Deerfield Trail
Medicine Loop (West)