The first person to stand on this summit was Koyukon Athabascan
On June 7, 1913, a four-person team reached the top of North America. The expedition was led by Hudson Stuck, an English-born Episcopal archdeacon based in Fairbanks. Harry Karstens, a veteran Alaska guide, managed the route. Robert Tatum, a 21-year-old theology student, served as cook. The fourth member was Walter Harper.
Harper was 20 years old. His father, Arthur Harper, was an Irish immigrant. His mother, Jennie Seentahna, was Koyukon Athabascan. He was climbing a mountain his mother's people had called Deenaalee — "the tall one" — for thousands of years before any European saw it.
Harper reached the summit first, at 1:30 PM. Tatum and Karstens arrived seconds later. Stuck came last, reportedly collapsing on the summit. From the top, Stuck spotted a 14-foot spruce pole on the lower North Peak through binoculars — confirming part of the Sourdough Expedition's disputed 1910 claim.
The public reaction was muted. The New York Times carried the announcement on June 21. The Appalachia Journal published a small notice a year later.
After the climb, Harper pursued education and was accepted to medical school in Philadelphia. On September 1, 1918, he married Frances Wells in Fort Yukon, with Stuck officiating. The newlyweds boarded the SS Princess Sophia in Skagway on October 23, 1918. The ship grounded on Vanderbilt Reef in Lynn Canal during a gale, broke apart, and sank on October 25, killing all 343 aboard. Walter and Frances died together. Their recovered bodies were buried side by side in Juneau. He was 25 years old.
Harper Glacier on Denali is named in his honor. The Talkeetna Ranger Station was renamed the Walter Harper Talkeetna Ranger Station in 2013. Alaska designated June 7 as annual Walter Harper Day in 2020. A bronze statue was unveiled in Fairbanks in 2022.
The mountain he climbed — the one his people had always named — spent the next 102 years carrying the name of an Ohio politician who never visited Alaska.
The naming war is not history — it is happening now
In 1896, gold prospector William Dickey named the peak "Mount McKinley" in a dispatch published in The New York Sun on January 24, 1897. His motivation was explicitly political: he was retaliating against silver-standard miners by invoking gold-standard presidential candidate William McKinley. McKinley never visited Alaska and had no connection to the mountain.
After McKinley's assassination in 1901, Congress formalized the name through the Mount McKinley National Park Act, signed by Woodrow Wilson on February 26, 1917.
Alaska's state government changed the name back to "Denali" in 1975. Governor Jay Hammond's administration requested federal recognition, citing Koyukon heritage and common usage. Ohio Representative Ralph Regula — whose district included McKinley's hometown of Canton — deployed a procedural maneuver for the next 34 years: he introduced biennial legislation on the naming question, which prevented the U.S. Board on Geographic Names from considering Alaska's request while a congressional bill on the subject was pending. He did this from 1975 to 2009.
On August 28, 2015, Secretary of the Interior Sally Jewell officially renamed the mountain "Denali," citing the Board's failure to act on Alaska's four-decade-old request. All 13 Republican members of Ohio's congressional delegation signed a complaint letter.
On January 20, 2025, President Trump signed Executive Order 14172 requiring the Interior Secretary to revert the name to "Mount McKinley" within 30 days. The change was made official January 23, 2025.
Both Alaska Republican senators opposed the action. Lisa Murkowski stated: "There is only one name worthy of North America's tallest peak: Denali — the Great One." On February 13, 2025, Murkowski and Dan Sullivan introduced legislation to restore "Denali" federally.
As of May 2026, the federal government uses "Mount McKinley." Alaska state government continues using "Denali." The national park retains "Denali National Park and Preserve." Business naming in Alaska favors "Denali" over "McKinley" by approximately six to one.
The Koyukon people had four names for this mountain across their language groups. The Lower Tanana called it Deenadheet. The Ahtna called it Dghelaay Ce'e — "big mountain." The Upper Inlet Dena'ina called it Dghelay Ka'a. All of these names predate European contact by millennia.
This article uses "Denali." The Koyukon named it before William Dickey's 1896 dispatch, and Walter Harper — the first person confirmed to stand on its summit — was Koyukon.
The largest base-to-summit rise on Earth
Most discussions of Denali focus on its summit elevation: 20,310 feet, highest point in North America. This is the wrong number.
The right number is the base-to-summit gain. Denali's base on the surrounding lowlands sits at approximately 2,000 feet, yielding a base-to-peak rise of approximately 18,000 feet. Everest's base-to-peak rise from the Tibetan Plateau is approximately 12,000 to 13,000 feet. K2's from Concordia is approximately 11,000 feet. No mountain on Earth presents a larger vertical mass to the climber.
Then there is the latitude problem. Denali sits at 63.07 degrees north — the highest major peak in the world at such extreme latitude. At the poles, the atmosphere is thinner than at the equator at equivalent altitudes. This means Denali's effective physiological altitude is significantly higher than its barometric reading. Climbers experience conditions equivalent to a 22,000- to 23,000-foot peak at equatorial latitudes. The weather station at 19,000 feet — one of the highest in the world — recorded a temperature of -75.5 degrees F on December 1, 2003, and a windchill of -118.1 degrees F the day before. That windchill is the coldest recorded in North America.
Even in July, the station has recorded temperatures of -22.9 degrees F with windchills to -59.2 degrees F.
The West Buttress route is graded Alaska 2 — roughly equivalent to a steep snow hike with one section of fixed lines. The word "hike" appears in marketing materials. Yet the conditions — multi-week exposure, sustained temperatures of -40 degrees F and colder, whiteout storms lasting days, crevasse terrain requiring rope travel, and 60- to 80-pound sleds clipped to your harness — make it a full expedition. This combination of low technical barrier and extreme environmental barrier is unique among the world's major peaks.
Denali is the only one of the Seven Summits where you pull a sled. It is not done on Everest, Aconcagua, Elbrus, Kilimanjaro, Vinson, Carstensz, or Kosciuszko. The sled is not optional. You haul 60 to 80 pounds of cached supplies on a plastic sled behind you while carrying 40 to 70 pounds in your pack. For 17 to 21 days.
36% summit rate — back to back
The widely cited success rate for Denali is "about 50%." That number is outdated.
In 2024, 36% of climbers summited. Three died. In 2025, the number was again approximately 36% — described as the lowest success rate and one of the most challenging weather seasons in 50 years. Two died: Alex Chiu, 41, from a 3,000-foot fall onto Peters Glacier, and Nicholas Vizzini, 29, in a soft-slab avalanche below Rescue Gully at approximately 16,600 feet.
| Year | Registered | Summit Rate | Fatalities |
|---|---|---|---|
| 2022 | 1,132 | ~50% | 3 |
| 2023 | 1,021 | ~50% | 6 |
| 2024 | 1,001 | 36% | 3 |
| 2025 | 943 | ~36% | 2 |
Two consecutive seasons at 36% is not a statistical anomaly. It is either a weather trend shift or evidence that the historical 50% average was buoyed by exceptionally good years. The seasonal cap is 1,500 climbers between April 1 and August 1, but recent years have not come close to filling it.
The weather window — the period of stable high pressure required for a summit attempt — is notoriously narrow. Windows typically last one to three days. Teams at the 14,200-foot camp may wait 5 to 14 days for one. Some seasons produce only one or two viable windows for the entire season. Winds at 14,200 feet routinely exceed 100 mph.
The guided vs. independent gap is extreme. Alpine Ascents International reported a 100% summit rate in 2024 — 61 climbers summited across 12 expeditions — while the overall mountain rate was 36%. RMI Expeditions reports a 74.9% career success rate across 300-plus expeditions and 50 years. The difference is patience, timing, and the willingness to wait out storms that independent teams may not budget time for.
The implication: if you go unguided, your probability of summiting is significantly worse than 36%.
The real cost: $15,000 to $21,500
Two NPS-authorized guide companies have published 2026 rates. Alpine Ascents International charges $11,900 for a 20-day expedition. RMI Expeditions charges $12,900 for 21 days. Both include round-trip bush plane flights to Kahiltna Base Camp, meals, group gear, and guide fees. Neither includes the NPS registration fee, personal gear, flights to Alaska, lodging, insurance, or tips.
| Item | Cost (USD) |
|---|---|
| Guided expedition fee | $11,900-$12,900 |
| NPS mountaineering permit | $450 |
| NPS entrance fee | $15 |
| Round-trip flights to Anchorage | $300-$800 |
| Personal gear (if buying new) | $3,000-$6,000 |
| Talkeetna lodging (pre/post) | $150-$400 |
| Travel insurance | $200-$500 |
| Tips for guides | $200-$500 |
| Total range | $15,000-$21,500 |
The NPS permit fee is now $450 for adults and $350 for climbers aged 24 and under. This is up from $395 in 2025. Many guide company websites and third-party sources still cite the old number. Cancel after February 15 and you forfeit the full fee — no refunds, no transfers.
There are exactly seven NPS-authorized concessioners permitted to guide on Denali: Alaska Mountaineering School, Alpine Ascents International, American Alpine Institute, International Mountain Guides, Mountain Trip, NOLS, and RMI Expeditions. Anyone else guiding on the mountain is operating illegally and subject to prosecution.
For independent climbers, subtract the guide fee but add the air taxi ($660-$750 via Sheldon Air Service or competitors), food and fuel for 21-plus days ($400-$600), and group gear if not owned ($500-$1,500). Independent total: approximately $5,000 to $10,000. The success rate for independent teams is substantially lower than guided.
Most Alpine Ascents departures for 2026 were already sold out by early May. This is a market with high demand, high cost, and a 36% delivery rate on the stated objective.
The 1967 Wilcox disaster shaped everything
Before July 1967, four people had died on Denali [needs source — exact pre-1967 death toll varies by account]. The Wilcox disaster tripled the total death toll in a single week.
Joe Wilcox, a 24-year-old BYU graduate student, led an eight-person team via the Muldrow Glacier — the same route Harper and Stuck used in 1913. The NPS forced a merger with Howard Snyder's three-person Colorado group, creating a 12-person party. The merger was not the climbers' choice.
On July 15, the first summit party reached the top in near-perfect weather. On July 17, seven members departed for a second summit attempt with an unexpectedly late start after 2:00 PM. At 8:00 PM, a storm struck. The last radio contact came at 11:30 AM on July 18.
The storm was catastrophic. National Weather Service models later estimated winds possibly approaching 300 mph near the summit. NOAA concluded the conditions were "not survivable by any person."
All seven were killed. Three bodies were found. Four were never recovered.
Bradford Washburn called it "U.S. mountaineering's worst disaster." The Park Service considered closing Denali to climbing entirely. Instead, the disaster led to the enhanced NPS mountaineering regulations, the establishment of permanent ranger presence on the mountain, and the operational framework — orientation briefings, registration requirements, the ranger station at 14,200 feet — that exists today.
Every climber who registers at the Walter Harper Talkeetna Ranger Station in 2026 is following protocols that exist because of what happened to seven people in July 1967.
The park road has been closed since 2021
A massive landslide at Polychrome Pass — the area known as Pretty Rocks, at Mile 43 — has closed the Denali Park Road since August 2021. The cause is permafrost thaw, which has been accelerating since 2014. Before the closure, maintenance crews were spreading 100 truckloads of gravel per week to keep the road passable.
The closure eliminates bus access to Eielson Visitor Center (Mile 66), Wonder Lake (Mile 85), and Kantishna. Wonder Lake Campground is closed through at least 2026. The Road Lottery — the once-popular September permit for driving the full 92 miles — is suspended indefinitely.
A 475-foot bridge is under construction at Mile 45.4 to bypass the landslide. The NPS says construction "will continue through 2026" without committing to a specific reopening date.
For 2026, the operational reality is: private vehicles can access the first 15 miles to Savage River. Transit and tour buses run to East Fork Bridge at Mile 43. Everything beyond — the classic "Denali from Stony Hill" viewpoint, Eielson, Wonder Lake, the best wildlife-viewing corridors — is inaccessible to anyone who is not a backcountry backpacker willing to walk.
Many current English-language guidebooks still describe the full-road experience as if it is available. Eielson Visitor Center is still listed as a "don't miss" stop. Wonder Lake is still called a "must-do day trip." These descriptions are five years out of date.
This does not affect mountaineers, who fly into Kahiltna Base Camp from Talkeetna and never touch the park road. But for the roughly 400,000 annual visitors who come to Denali National Park without climbing plans, the road closure reshapes the entire visit.
The deeper issue is permafrost. In the 1950s, approximately 75% of the park had near-surface permafrost. By the 2000s, that had dropped to approximately 50%. Projections for the 2050s put it at 6%. The Pretty Rocks landslide is not an isolated infrastructure failure. It is a preview.
What the standard description omits
The standard marketing description for Denali is: climb the highest peak in North America. Seven Summits credential. A non-technical route accessible to fit amateurs with glacier travel experience.
Here is what that description omits.
The "non-technical" label is misleading. Alaska Grade 2 means you do not need to lead ice pitches. It does not mean you do not need expedition-grade cold weather survival skills. The West Buttress has a 900-foot headwall at 45 to 50 degrees on fixed lines, a whiteout navigation hazard called the Football Field at 19,500 feet, and sustained exposure to temperatures that cause frostbite in minutes. The NPS published a dedicated case study on frostbite from a 2025 West Buttress climber.
If NPS rescues you, your climbing permit is cancelled. This is buried in the terms and conditions. A helicopter evacuation from 14,200 feet means your season is over — you cannot re-register and try again that year. Most medical and transport costs are the patient's responsibility. The NPS expectation is that teams are self-sufficient and capable of self-rescue.
Mount Rainier is necessary but radically insufficient preparation. Rainier introduces glacier travel, crevasse rescue, and crampon technique — all relevant. But it is a two- to three-day climb versus Denali's 17 to 21 days. Rainier summit temperatures rarely drop below 0 degrees F. Denali routinely hits -40 degrees F. Rainier does not involve sled hauling, multi-day storms, or the psychological commitment of a three-week expedition. It tests approximately 30% of the required skill set.
The expedition requires 4,000 to 5,000 calories per person per day, 4-plus liters of fluid, and a sleeping bag rated to -20 degrees F minimum (-30 to -40 degrees F for early-season attempts). The standard load is 60 to 80 pounds in the sled and 40 to 70 pounds in the pack. Training should simulate, per the NPS, "carrying a heavy (40-70 lb) backpack while pulling a heavy (60-80 lb) sled on mostly moderate terrain for 6 to 8 hours at a time."
The cumulative fatality rate is approximately 3 to 4 deaths per 1,000 climbers — roughly 130 deaths among approximately 35,000 total attempts since 1903. The 2023 season alone killed six people. From 1947 to 2018, 11% of all U.S. mountaineering accidents occurred on Denali, and 8% of all U.S. mountaineering deaths.
Indigenous presence in the Denali economy
Denali sits on federal land, but the surrounding landscape is a patchwork of Alaska Native corporation holdings created by the Alaska Native Claims Settlement Act of 1971.
Doyon, Limited — the largest private landholder in Alaska, controlling approximately 12.5 million acres — serves roughly 20,000 Alaska Native shareholders of Alaskan Athabascan descent. Within Denali, Doyon operates the Kantishna Roadhouse, a grandfathered private backcountry lodge deep inside park boundaries, and holds an Aramark joint venture managing official park concessions including campgrounds, transit buses, and interpretive services.
Ahtna, Incorporated holds over 1.5 million acres, primarily in the Copper River area with a footprint extending into the Denali Borough near Cantwell.
Residents of Nikolai, Telida, Lake Minchumina, and Cantwell retain authorization to hunt within park boundaries because large portions of these communities historically hunted in the area for subsistence purposes. Sport hunting is permitted only in designated preserve lands. This creates a two-tier access system: Alaska Native communities retain subsistence rights that recreational visitors do not have.
This is structurally different from most major mountain tourism economies. On Kilimanjaro, local Chagga communities are largely excluded from guiding revenue. On Aconcagua, indigenous presence in the modern climbing economy is minimal. On Denali, indigenous-owned corporations operate concessions inside the park and hold millions of acres surrounding it. The economic relationship is not equitable — it never is — but it is more materially integrated than at any other Seven Summit.
What Denali is
Denali is the largest base-to-summit rise on Earth. It sits at a latitude where the atmosphere compresses and -40 degrees F is a routine operating temperature. The standard route is a 17- to 21-day glacier expedition requiring sleds, rope teams, and crevasse rescue gear. Two out of three people who paid $15,000 or more in 2024 and 2025 did not summit. Six died across those two seasons.
The first person confirmed to stand on its summit was a 20-year-old Koyukon Athabascan man whose people named the mountain. The federal government named it after someone else for 98 years, restored the original name for 10, and then erased it again.
The park road that once carried visitors 92 miles into the interior has been broken by thawing permafrost since 2021 and has no confirmed reopening date. Glaciers in the park lose approximately 6.6 feet of ice per year. The permafrost that held the landscape together is projected to decline from 50% coverage to 6% by mid-century.
The NPS permit costs $450. Many published sources still cite the old number. The success rate is 36%. Many published sources still cite 50%. The park road is closed at Mile 43. Many guidebooks still describe Mile 85.
The mountain Walter Harper climbed in 1913 is the same mountain that exists in 2026. The information most people use to plan for it is not.