9.4 miles, Half day
An amazing single track descent makes this 5 mile climb and 2,000 foot elevation gain on a forest road well worth it! You will actually descent the ridge of O'Leary Mtn even though the name of the trail is Olallie Mtn which is several miles away.
From I-5 take state Highway 126 from Eugene until you get to the town of McKenzie Bridge. Turn right on Forest Service Road 2683 "Horse Creek Road" just past the town. At 1.8 miles down the road take a right onto Forest Service Road 1993. Continue up this road for almost 3 miles until you see a parking pullout on the left. Park here and start riding up the road.