Grist Mill Trail, Patapsco Valley

Dogs on a leash all year

A paved, level trail beside the Patapsco River in the park's Avalon area, where pets are allowed.

Source: Maryland Park Service, Pet Policy (May 2024). Checked October 29, 2026.

Follow the signs at the trailhead: parks can close areas to dogs for wildlife.

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Maryland Park Service: pet policy: the rule in full

Maryland lists, park by park, where pets are allowed. Dogs must be on a leash. Many parks keep pets off the sandy part of swimming beaches from Memorial Day weekend until after Labor Day, and some allow pets only in certain campground loops or areas. Check the list for the park you're visiting.

Dog walks nearby

• Soldiers Delight trailsDogs on a leash all year

Nearby beaches

• Ocean City beachNo dogs from May 1 to September 30. Dogs on a leash the rest of the time