Marion Reservoir Trail is a standout hiking destination in Marion, Kansas, covering 5.0 miles with 140ft of elevation change. Stats: 5.0 miles, 140ft gain, Moderate. Type: Loop. Surface: Dirt. Time: 2-3 hours. Fee: $5 park fee. Dogs: Yes. Permit: No. Wildlife: deer, wild turkeys, pelicans, herons. Best seasons: Prairie and woodland trail at Marion Reservoir. Pack water, layers, and appropriate footwear. Conditions vary across Kansas. Leave No Trace: stay on trail, pack out all waste, respect wildlife.