Fort Delaware State Park Trail is a standout hiking destination in Delaware City, Delaware, covering 2.5 miles with 10ft of elevation change. Stats: 2.5 miles, 10ft gain, Easy. Type: Loop. Surface: Paved. Time: 1-2 hours. Fee: Ferry fee $10. Dogs: Yes. Permit: No. Wildlife: herons, ospreys, deer, great black-backed gulls. Best seasons: Pea Patch Island Civil War fort accessible by ferry. Pack water, layers, and appropriate footwear. Conditions vary across Delaware. Leave No Trace: stay on trail, pack out all waste, respect wildlife.