Ken Lockwood Gorge Trail is a standout hiking destination in High Bridge, New Jersey, covering 3.5 miles with 200ft of elevation change. Stats: 3.5 miles, 200ft gain, Moderate. Type: Out-and-Back. Surface: Rock/Dirt. Time: 1-2 hours. Fee: Free. Dogs: Yes. Permit: No. Wildlife: deer, herons, brook trout, kingfishers. Best seasons: Pristine Raritan River gorge with excellent trout fishing. Pack water, layers, and appropriate footwear. Conditions vary across New Jersey. Leave No Trace: stay on trail, pack out all waste, respect wildlife.