First aircraft landing in support of a climbing expedition: Bush pilot Joe Crosson lands the Cosmic Ray Party at 5,700-feet on the Muldrow Glacier. Two members of this party perish on the descent, becoming the mountain's first fatalities.
First recorded summit of Mt. Foraker by an expedition led by Charles Houston.
U.S. Army Alaskan Test Expedition, including scientist and explorer Bradford Washburn, sets out to winter-test army equipment.
Barbara Washburn becomes the first woman to summit Mt. McKinley.
Bradford Washburn and seven teammates pioneer the West Buttress route.
First European team (Spain) ascends Mt. McKinley.
The first ascent of South Buttress of Mt. McKinley, also the peak's first official traverse, is recorded. Expedition leader and Mt. McKinley park ranger Elton Thayer dies in a climbing fall while descending Karsten's Ridge.
The Northwest Buttress of Mt. McKinley also posts its first ascent. Later that season, two of the Northwest Buttress expedition members, Fred Beckey and Henry Mehbohm, record the first ascent of Mt. Hunter and Mt. Deborah.
Pilot Don Sheldon flies the first commercial flight from Talkeetna to the Kahiltna Glacier.
A party of four makes the first ascent of the West Rib of McKinley (Breitenbach, Buckingham, Corbet, Sinclair).
Bradford Washburn publishes a topographic map of McKinley.
A Meiji University team becomes first party to camp on McKinley's summit on May 14 and 15.
An Italian party led by Ricardo Cassin is the first to summit McKinley via the Cassin Ridge.
First recorded ascent of the North Peak via the Harvard Route on the Wickersham Wall.
The first north-to-south traverse of the mountain from the Muldrow Glacier to the Kahiltna Glacier.
Art Davidson, Dave Johnston, and Ray Genet make the first winter ascent of McKinley.
Three significant firsts on Mt. McKinley are recorded including first solo ascent (Naomi Uemura); first all-female ascent; and the mountain's first ski descent.
First female Native American reaches the summit, Betty Menard.
203 climbers attempt Mt. McKinley, 108 reach the summit.
The nation's centennial brings forth a record number of mountaineers (508). The first solo ascent of the Cassin Ridge is made, as well as the peak's first hang glider descent.
First dog team ascent of Mt. McKinley made by Susan Butcher, Joe Redington, Brian Okonek, Ray Genet and Robert Stapleton.
Dr. Miri Ercolani is the first woman to solo Mt. McKinley.
The Denali Medical Research Project begins operations at the 14,200-foot basin.
Naomi Uemura achieves the first winter solo ascent, though he disappears on the descent.
Vernon Tejas is the first solo climber to ascend Mt. McKinley in the winter and survive.
Oldest husband and wife team, Norm (age 64)and Kip (age 62) Smith summit Mt. McKinley.
Joan Phelps completes the first blind ascent of Mt. McKinley.
The youngest female reaches the summit of Mt. McKinley, Merrick Johnston, age 12.
Daryl Miller and Mark Stasik make the first winter circumnavigation of Mt. McKinley and Mt. Foraker massifs (second complete circumnavigation in history).
First continuous ski descent of the Wickersham Wall made by soloist Adrian Nature.
Toshiko Uchida, age 70, becomes oldest woman to reach summit. At the other end of the spectrum, Galen Johnston, age 11, becomes the youngest male to reach the summit.
A record 1,340 climbers attempt Mt. McKinley, 775 of them reach the summit.
Masatoshi Kuriaki completes the first solo winter ascent of Mt. Foraker.
The record for the oldest male to reach summit is broken on June 28, 2013 by Alaskan resident Tom Choate, age 78.
Secretary of the Interior Sally Jewel, endorsed by President Obama, issued a Secretarial Order that officially changed the mountain's name from Mount McKinley to Denali. Jewell is granted the authority to make such changes in certain cases per the 1947 federal law that provides for the standardization of geographic names through the U.S. Board on Geographic Names. The name change will be reflected in all federal usage.
(Sources: Denali staff; Bradford Washburn's Mt. McKinley Summary of Attempts and First 100 Ascents; Mt. McKinley - The Pioneer Climbs, by Terris Moore; Denali Symbol of the Alaskan Wild, by Bill Brown, and Mt. McKinley Icy Crown of North America, by Fred Beckey)