The Chumash Trail three miles, moderate The trail leads up to the main Rocky Peak Trail, intersecting the trail just south of Blind Canyon. The trail will take visitors on a steady climb upward, with beautiful views and abundant wildflowers in spring. It starts at the terminus of Flanagan Street in a residential subdivision of Simi Valley. Take the 118 Freeway to Yosemite Avenue, going north on Yosemite. Turn right on Flanagan and follow to the end, parking along the street. You will see a park rules sign and information kiosk.