Cabin John Regional Park
Dog rule: Montgomery Parks regulation (Park Rules Ch. IV s.18): animals must be held at all times on a physical leash attached to a collar or harness, except in designated areas (dog parks), owners must remove waste, animals prohibited where posted, the regulation sets no leash length. Regional dog park with separate small-dog (20 lbs or less) and large-dog (21 lbs or more) areas, dogs leashed entering and exiting, current vaccinations required, no fee or permit.
Venue confirmed Checked Nov 10, 2026. Source