Bellevue State Park Trail is a standout hiking destination in Wilmington, Delaware, covering 3.5 miles with 100ft of elevation change. Stats: 3.5 miles, 100ft gain, Easy. Type: Loop. Surface: Paved/Dirt. Time: 1-2 hours. Fee: $4 park fee. Dogs: Yes. Permit: No. Wildlife: deer, foxes, herons, painted turtles. Best seasons: Former du Pont estate grounds on the Delaware River. Pack water, layers, and appropriate footwear. Conditions vary across Delaware. Leave No Trace: stay on trail, pack out all waste, respect wildlife.