For much of the San Francisco Peninsula, State Route 35 (SR 35) runs along the ridge, and is known as "Skyline Boulevard", while Interstate 280 runs east of the ridges. The major routes across the mountains are (from north to south): SR 92 from Half Moon Bay to San Mateo, SR 84 from San Gregorio to Redwood City, SR 9 from Santa Cruz to Saratoga, SR 17 from Santa Cruz to Los Gatos, SR 152 from Watsonville to Gilroy, SR 129 from Watsonville to San Juan Bautista, and US Highway 101 from Salinas to Gilroy. Meanwhile, SR 1 runs parallel to the mountains from Daly City to Castroville while SR 85 runs parallel from Cupertino to San Jose.