The primary visitation season runs from May 1 to September 15.
Visitation is lowest in winter months.
Anchorage is 240 miles to the south and Fairbanks is 125 miles to the north of the park. In summer a variety of private bus and van services and the railroad operate daily from Anchorage and Fairbanks. Winters are extremely cold with temperatures falling to -40F and below. Layers of clothing, including good rain gear and hiking boots are recommended for summer. Specialized cold-weather gear is necessary for mountaineering and winter visits.