The Exit Glacier and Harding Icefield hike is a one-two hit combo in the Kenai Fjord National Park just outside of Seward, Alaska. Most hikers decide to day hike to Exit Glacier to see this massive frozen river up close, but few push onward and upward to the Harding Icefield. If you have the time and energy, you should hike up the switchbacks to the Harding Icefield so you can soak in the United States largest icefield.