The park is criss-crossed with hiking trails, and during proper weather it is possible to visit the glacier with a tour or guide. Malarrif is home to the National Park Visitor Centre, and area tourist offices sell maps and give advice, too. The park's online map is also excellent. Rangers have an active summer program of free park guided tours; check online.
Most of the small towns just outside of the park have rental houses, campgrounds or guesthouses which are an easy drive. Summit Adventure Guides operates Westpark Guesthouse, just inside the north edge of the park.
Stock up on groceries in Borgarnes or Stykkishólmur; provisions and restaurants are few and far between in the park.