Mormon Island State Recreation Area Trail is a standout hiking destination in Grand Island, Nebraska, covering 3.5 miles with 40ft of elevation change. Stats: 3.5 miles, 40ft gain, Easy. Type: Loop. Surface: Gravel. Time: 1-2 hours. Fee: $6 park fee. Dogs: Yes. Permit: No. Wildlife: sandhill cranes, deer, herons. Best seasons: Platte River island trail popular during sandhill crane migration. Pack water, layers, and appropriate footwear. Conditions vary across Nebraska. Leave No Trace: stay on trail, pack out all waste, respect wildlife.