Denali National Park & Preserve

Denali National Park & Preserve occupies 6,045,153 acres of interior Alaska, roughly 240 miles north of Anchorage, centered on Denali — the highest peak in North America at 20,310 feet. A single unpaved road stretches 92 miles into the park, but private vehicles are permitted only to mile 15 at Savage River; beyond that, the park is accessible only by the NPS bus system, on foot, or by small aircraft. This deliberate access restriction keeps the interior wild: 95 percent of the park is designated wilderness with no maintained trails outside the entrance corridor. The park draws about 601,000 visitors per year, ranking 41st among the 63 national parks, with nearly all visits concentrated in the short open season of late May through mid-September.

Denali, the highest peak in North America at 20,310 feet, visible on clear days from as far as 200 miles away and a goal for roughly 1,000 mountaineers who attempt the summit each year via the West Buttress and other routes.
The park bus system, the primary way to travel the 92-mile road into the wilderness, where grizzly bears, wolves, caribou, and Dall sheep are regularly spotted from the window by passengers scanning the open tundra.
Wonder Lake at mile 85, a glacially carved lake near the north end of the park road that produces a famous reflection of Denali on calm mornings — one of the most photographed views in Alaska.
The absence of maintained trails beyond the entrance area, which means visitors exploring the backcountry navigate cross-country through open tundra and taiga with a map, compass, and a free backcountry permit.

By car from Anchorage: Take the Parks Highway (AK-3) north from Anchorage for approximately 240 miles to the park entrance near the town of Healy. The drive takes 4 to 5 hours without stops. The Parks Highway passes through Wasilla, Talkeetna Junction, and Cantwell before reaching the park entrance. Gas stations are available in Wasilla, Talkeetna, and Healy; fill up before entering — there is no gas on the main park road past mile 85.

By car from Fairbanks: Take AK-3 (Parks Highway) south for approximately 125 miles to the park entrance, about 2 to 2.5 hours. Fairbanks is the nearest city north of the park and a common base for multi-day itineraries combining Denali with interior Alaska.

By train: The Alaska Railroad operates the Denali Star train between Anchorage and Fairbanks, with a station at the park entrance. The train runs daily in summer, taking approximately 7 to 8 hours from Anchorage. The domed glass cars offer mountain and glacier views en route. Book the Alaska Railroad through their website; the Denali stop is on request.

By air: Ted Stevens Anchorage International Airport (ANC) is the main gateway, approximately 240 miles south. ANC is served by major domestic and some international carriers. Fairbanks International Airport (FAI) is a closer alternative from the north, about 125 miles away. Small charter aircraft fly into the park's backcountry airstrips and offer flightseeing tours from Talkeetna and Healy, the primary base for mountaineering expeditions and aerial views of Denali.

Denali and the Alaska Range formed through the collision of the Pacific Plate with North America, a process that continues today and makes the region one of the most seismically active in the world. The core of Denali is composed of McKinley Granodiorite — a light-colored intrusive igneous rock that crystallized deep in the crust roughly 60 million years ago as magma forced its way into older sedimentary rock. The surrounding Alaska Range is built from a jumble of oceanic and continental rock terranes that were scraped off the descending Pacific Plate and accreted onto North America over tens of millions of years.

The mountain rises so dramatically in part because of its starting elevation. Denali's base camp on the Kahiltna Glacier sits at roughly 7,200 feet, and the summit reaches 20,310 feet — giving the mountain a vertical rise of about 13,000 feet from its main base, one of the greatest base-to-summit rises of any mountain on Earth. By comparison, Everest rises roughly 12,000 feet from its Tibetan Plateau base despite its higher absolute elevation. The mountain is still rising; GPS surveys show it gaining a few millimeters of elevation per year from ongoing tectonic compression.

Active glaciers cover much of the upper Alaska Range within the park. The Kahiltna Glacier on the southwest flank is the longest in the park at approximately 44 miles; it is the standard approach route for mountaineers attempting the West Buttress. The Ruth Glacier on the southeast side drains into the Ruth Amphitheater, a cirque walled by vertical granite faces that mountaineers describe as one of the most dramatic alpine settings in the world. At lower elevations, the valleys show clear evidence of Pleistocene glaciation: U-shaped profiles, glacially polished bedrock, kettle lakes (including Wonder Lake), and terminal moraines visible across the tundra landscape.

Denali is known for its "Big Five" — grizzly bears, wolves, Dall sheep, caribou, and moose — all of which a visitor on the park bus has a realistic chance of seeing in a single day. Grizzly bears are the most frequently spotted large mammal; they range across the open tundra and river bars and are visible from the bus throughout the summer. Dall sheep, the only wild white sheep in the world, inhabit rocky ridgelines throughout the park and are a near-certain sighting from Polychrome Pass and the slopes above Eielson.

Caribou from the Denali Herd cross the park road throughout the summer and into fall, their numbers concentrated near river crossings. The herd has numbered from a few thousand to over 25,000 at various points in its documented history; it has been studied continuously since the 1920s. Wolves are the most elusive of the Big Five; the park's wolf population fluctuates between roughly 50 and 100 animals in good years, organized into packs with established territories. Sightings from the bus, though not daily, are genuine, particularly near Sable Pass and the Toklat River.

Moose are most reliably seen in the willow thickets near stream drainages in the eastern part of the park, particularly in the Horseshoe Lake area near the entrance. Golden eagles nest on cliffs throughout the park and are regularly spotted soaring above the ridgelines. Arctic ground squirrels — fat, short-tailed rodents with distinctive alarm calls — are ubiquitous on tundra slopes and are one of the main prey items for both grizzlies and wolves. Wolverines, lynx, and snowshoe hares are present but rarely seen.

The park contains no venomous reptiles or insects of serious concern aside from mosquitoes, which are prolific from late May through July. Bring insect repellent and head nets for any extended time outdoors in early summer.

Koyukon Athabascan people and other Athabascan-speaking groups have lived in and around the Alaska Range for thousands of years. The mountain has long been called Denali in Athabascan languages, meaning "the high one" or "the great one" in the Koyukon dialect. The surrounding lowlands provided hunting, fishing, and travel routes through the interior; summer camps on the tundra and winter settlements in the river valleys were the pattern of life that persisted into the 19th century and, for many communities, continues today.

The first recorded European-American attempt to climb Denali was made by Judge James Wickersham in 1903 via the north face — a route now considered among the most dangerous on the mountain; he turned back at around 10,000 feet. Dr. Frederick Cook falsely claimed the first ascent in 1906; his fraud was publicly exposed years later. The Sourdough Expedition of 1910, undertaken by four Alaskan miners with no formal mountaineering experience, reached the north summit (20,574 feet by modern measure) but not the slightly higher south summit. The first confirmed ascent of Denali's south summit — the true high point — was made on June 7, 1913, by a party of four led by Hudson Stuck and Harry Karstens, with Walter Harper, an Alaska Native of Athabascan descent, stepping onto the summit first.

The naturalist Charles Sheldon spent two winters in the Denali region between 1906 and 1908 studying Dall sheep and the wider ecosystem. His advocacy, sustained over the following decade, persuaded Congress to act. President Woodrow Wilson signed the legislation establishing Mount McKinley National Park on February 26, 1917 — the first national park in Alaska. The original park boundaries enclosed approximately 2 million acres focused on the mountain itself.

The Alaska National Interest Lands Conservation Act (ANILCA), signed by President Jimmy Carter on December 2, 1980, transformed the park. ANILCA renamed it Denali National Park & Preserve, expanded its boundaries by more than 4 million acres to the current 6,045,153, and designated the majority of the expanded area as wilderness. The same law created or expanded several other Alaskan parks. In 2015, the U.S. Department of the Interior officially changed the federal name of the mountain from Mount McKinley back to Denali, aligning government usage with longstanding Alaskan and Indigenous practice.