Hallmark Park Hallmark Dr & Wakefield Dr, Belmont, CA94002 Located up in the hills of Belmont near Interstate Highway 280, Hallmark Park has something for everybody. Visitors are…More greeted with numerous options, and can come to play tennis on the sunny courts, go for a stroll, use the playground, sit on the shaded benches or go for a run around the cross country track. The park is open from sunrise to sunset, and does not allow smoking or open flames. A water fountain is provided for the thirsty tennis players and runners. Dogs must be a on a leash and cleaned up after.