Del Mar Dog Park (Off-leash, open dawn-dusk)

Del Mar Dog Park in San Ramon, California is a nice local spot. It is located under power lines and has separate areas for big and small dogs. The park has tanbark on the ground, water fountains, and many chairs for people to sit and relax while their dogs play. It can get busy with larger dogs. There are also some seasonal issues, like heat in summer and flooding in winter near the creek. Still, the friendly vibe and good location make it a favorite for local pet owners.