Is Denali National Park Safe?

Grizzly bears are common in Denali, and all visitors should carry bear spray on hikes. Store food in bear-proof containers. Maintain at least 300 yards (275 metres) from bears and moose. Moose can be aggressive, especially cows with calves in spring. Wolves are present but rarely seen and pose minimal risk. Dall sheep and caribou are generally not dangerous. Never approach or feed any wildlife.

Hypothermia is possible even in summer, as temperatures can drop rapidly. Altitude sickness is not a concern for most visitors (park road elevation is 600 to 1,200 metres). Mosquitoes and biting insects are intense from June to August. Bring strong repellent and a head net. Giardia is present in backcountry water sources. The park has a medical clinic at the entrance area.

Crime is virtually non-existent in Denali. The park is patrolled by National Park Service rangers. The nearest town, Healy, is small and safe. Standard precautions with belongings are sufficient. Cell service is extremely limited in the park.

Private vehicles are only permitted on the first 15 miles of the park road. Beyond that, transit and tour buses are the only option. The park road is narrow, unpaved, and follows cliff edges. Buses are driven by experienced park service drivers. Winter access is limited to dog sled, ski, or snowshoe. Flightseeing tours are popular and generally safe but use small aircraft.

Weather is highly unpredictable. Summer temperatures range from 5 to 25 degrees Celsius, but sudden drops and rain are common. Snow is possible any month of the year. Winter temperatures reach minus 30 to minus 40 degrees Celsius. Denali (the mountain) creates its own weather systems. Pack layers and rain gear even in July.

Glacial rivers have extremely cold water and dangerous currents. River crossings in the backcountry require experience. Never attempt to cross glacial rivers in high water. All backcountry water should be filtered or treated for giardia. There is no recreational swimming in the park.