Lake Manawa State Park Loop is a standout hiking destination in Council Bluffs, IA, covering 4.5 miles with 100ft of elevation change. Stats: 4.5 miles, 100ft gain, Easy. Type: Loop. Surface: Paved. Time: 2 hours. Fee: $6/vehicle. Dogs: Yes, on leash. Permit: No. Wildlife: deer, pelicans, herons. Best seasons: Missouri River oxbow near Omaha. 0.0014. Pack water, layers, and appropriate footwear. Conditions vary across IA. Leave No Trace: stay on trail, pack out all waste, respect wildlife.