The Mount Grant Preserve is open to vehicles from 10 a.m. to 7 p.m. Sundays and Wednesdays. Mount Grant preserve map
The Land Bank's website describes the preserve as: Located between Mount Dallas and Cady Mountain on San Juan Island, Mount Grant Preserve protects and provides access to 250 acres of diverse forest, woodlands, and meadows. Visitors to the ridgetop summit are rewarded with sweeping vistas in all directions. Trails and roadways to the summit are open daily for pedestrian and non-motorized use. Driving access to the summit is open Sundays, weather permitting, from 10am to 7pm, (April – September) and 10am to 4pm, (October- March), for everyone to enjoy the Preserve’s expansive views, regardless of physical ability.