From the trailhead follow Gridley Trail north to the intersection with Fuelbreak Road Trail
; there is a nice vista point here. This section of trail runs over private property, so be courteous and stay on the trail. At the intersection with Fuelbreak Road Trail, stay right and follow a dirt road paralleling avocado groves. As the trail enters the northwest side of Gridley Canyon, runners are treated to cooler temperatures, and a path lined with ferns and maple trees.
Gridley Springs is about 2.8 miles along the trail and makes for a nice rest. North of Gridley Springs, the trail narrows from a dirt road into a trail and enters an eastern fork of Gridley Canyon. The trail follows switchbacks past bay trees and the sedimentary rocks of the Topatopa Mountains. Gridley Trail ends at Gridley Saddle on Nordhoff Ridge Road.
Thanks to John McKinney, The Trailmaster, for sharing this trail description. To learn more about trails in California, check out his guides at The Trailmaster Store
Avocado groves, bay trees, ferns, and maple trees can be seen along this trail.