Rock Hill District Park

Address: 15150 Old Lee Rd, Chantilly, VA 20151

Separate fenced runs for large and small dogs give this Chantilly park a welcoming setup for mixed-size groups. Gravel covers the ground throughout, with enough trees scattered around to provide shade and several benches for owners to settle in. No water stations are on-site so bring your own, but parking is plentiful and the off-leash atmosphere draws a regular, friendly crowd.