Northfield Mountain Trail is a standout hiking destination in Northfield, Massachusetts, covering 7.0 miles with 600ft of elevation change. Stats: 7.0 miles, 600ft gain, Moderate. Type: Loop. Surface: Dirt. Time: 3-4 hours. Fee: Free. Dogs: Yes. Permit: No. Wildlife: deer, black bears, moose, wild turkeys. Best seasons: Reservoir pump-storage mountain with excellent hawk watching. Pack water, layers, and appropriate footwear. Conditions vary across Massachusetts. Leave No Trace: stay on trail, pack out all waste, respect wildlife.