Large public playing field, partially fenced, next to a golf course. Official hours are Mon-Fri, 6am – 3pm (Sept-May), Mon-Fri 6am – 8am (Jun-Aug), Sat-Sun 6am – 8am and Mon-Sun 8pm – 10pm. However, this is a large park and most of the sports events take place in the southern half. We have never been kicked out. People even offer dog training classes here. There are also drinking fountains. My old dogs like to romp on the turf grass. Location: East Washington St, east of Sonoma Mt. Parkway, just past the Petaluma airport (on your right). Directions: From HWY 101 north take the E. Washington–Central Petaluma exit. Turn right onto E. Washington drive approx. 1 mile. Take the first left turn after the airport. There will be baseball diamonds and recreational buildings at the south end of the park. Follow the drive to the north end, where there is plenty of parking and shade.