East of Lowman in the Boise National Forest, the Kirkham Ridge ATV Trail is a 35 mile route open to off-road motorcycle trails riding. The trail starts off SR21 and climbs gradually with vistas of Kirkham Hot Springs and the Sawtooths.
To reach the trailhead from Lowman, head east on SR21 for 5 miles. Park on the right side of the road and the trail starts on the left side.
Overall, Kirkham Ridge Trail is the 9th most popular dirt bike trail of all 53 dirt biking rides in Idaho.