Start behind the Visitor Center and cross the large bridge over Prairie Creek. The northern end meets the Coastal Trail, not the starting parking lot. Allow about 4 to 5 hours for the one-way route; that estimate reflects seven miles, roughly 1,300 feet of ascent and descent, and repeated climbs. If you simply retrace the route, expect about 14 miles and another full round of the steep sections. A separate 12.5-mile loop links West Ridge with James Irvine and Friendship Ridge if you want to return to the Visitor Center on other trails. The northern junction is remote; no direct road pickup was verified, so map your connection or turnaround before setting out.