North of Spokane and Colville in the Three Rivers Ranger District, the Gillette Ridge Trail System consists of two multi-purpose horseback riding loops totalling 13 miles.
Trailheads are located at Roger Mountain, Clinton Creek Forest Camp, and Onion Creek. Roger Mountain- travel state Route 20 one mile east of Colville. Turn north on county road 9435 and follow for 19 miles. Take Forest Service road 500 for 6.4 miles to trailhead. See map for Clinton Creek and Onion Creek trailhead locations.
Keep an eye out for caribou, moose and grizzly in the northeast corner of this national forest.
Overall, Gillette Ridge Trail System is the 22nd most popular horse trail of all 32 horseback rides in Washington.