Sir Francis Drake Boulevard is an approximately 43.8-mile east–west arterial road (70.5 km) in Marin County, California, running from the trailhead for Point Reyes Lighthouse at the end of the Point Reyes Peninsula to Interstate 580 just west of the Richmond-San Rafael Bridge. It is a main thoroughfare through the communities of Inverness, Point Reyes Station, Olema, Lagunitas-Forest Knolls, San Geronimo, Woodacre, Fairfax, San Anselmo, Ross, Kentfield, Greenbrae, and Larkspur. The road overlaps State Route 1 between Point Reyes Station and Olema.