The dog-friendly Flag Hill trail is located inside of Sunol Regional Wilderness. It shows off beautiful views of the park, Alameda Creek watershed and Calaveras Reservoir. You will see oak woodland and grassland communities; fossiliferous sandstone ourcrops. During the summer time watch out for foxtails.
Parking lots are provided inside the wilderness park for a small fee. Bring your own water and remember to bring extra for your dog during the summer. The fee is $5 seasonally, on weekends, and holidays, with an additional $4 per trailered vehicle and $25 per bus. There is a $2 fee per dog, but service dogs are free. The best time of year for this hike is spring. The distance is 1.26 miles and the degree of difficulty is moderate with steep slopes and switchbacks. The park is open from 7 a.m. to dusk all year unless otherwise posted or permitted.
Dogs are welcome on trails as long as they are under complete voice control. Please note that there is abundant wildlife here so if your dog tends to chase it will be best to keep them on leash.
