This is part one of a three-stage break-down of the "Orr Springs 600" permanent (RUSA permanent #2194, based on RUSA brevet #1513). The three-stage option allows riders to enjoy the course at a more moderate pace, with overnight rest stops on the Mendocino coast and along the shore of Clear Lake. Stage 1 winds its way from San Francisco through West Marin, traverses a rugged and challenging stretch of Sonoma's Coastal Range, and ends in Anchor Bay, on the Mendocino coast.