Follow Spring Street out of Friday Harbor. On the outskirts of town, Spring Street becomes the San Juan Valley Road. Continue about three more miles; the road makes a curve to the right (north) and shortly thereafter left (west again). You are now parallel to the trail but the easiest parking is another ½ mile farther to the three-way junction of San Juan Valley Road with Wold and Boyce roads. Find roadside parking but use caution crossing to the trailhead entrance.