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|Area||300 square miles (780 km2)|
The Harding Icefield is an expansive icefield located in the Kenai Mountains of the Kenai Peninsula in Alaska. It is also partially located in Kenai Fjords National Park. It is named for United States President Warren G. Harding.
The Harding Icefield can claim to cover over 300 square miles (777 km2) in its entirety (although, if one were to count its glaciers which descend from the icefield in all directions, the icefield measures in at over 1,100 square miles (2,849 km2)  The icefield spawns up to 40 glaciers of all types. Some of the more notable glaciers include the Tustumena Glacier, Exit Glacier, and McCarty Glacier. The Exit Glacier, however, is the most accessible of the glaciers being reached by a spur road off of the Seward Highway.
The icefield is also one of four remaining icefields in the United States and is the largest icefield contained entirely within the United States. The icefield itself receives over 400 inches of snow each year.
Seward residents generally ignored the huge icefield west of town before 1922. The construction of the Spruce Creek trail that year, however, made it possible to view the upper portions of the icecap, and President Harding's promise to visit the territory was sufficient to bestow his name on the feature. Between the mid-1920s and the early 1930s, the increasing popularity of aviation had given a lucky few the opportunity to soar over the icefield. Up to this point, however, people had walked only on the icefield's margins.
In early 1936, a 27-year-old Swiss immigrant and future state senator named Yule Kilcher disembarked in Seward. He was headed for Kachemak Bay, where he intended to take up residence, but he was so intrigued by the icefield he had seen from the steamship that he vowed to cross it before long. Unwilling to wait two weeks for a coastal steamer, Kilcher walked to the Homer area, probably by way of the Resurrection River valley. After securing a homestead, he returned to Seward, and in late July he hiked up the Lowell Creek drainage toward the icefield. Conditions on the icefield overwhelmed him however, and a week later he was back in Seward.
About 1940, two Kenai Peninsula residents, Eugene "Coho" Smith and Don Rising, apparently were successful in their attempt to cross the icefield. They hiked from Bear Glacier west to Tustumena Glacier. The men, however, told no one of their intentions, and once they returned, Smith's wife was the only one that was aware of what they had done. Their trip remained a virtual secret for more than twenty years after they completed it.
Two parties attempted to cross the icefield in the mid-1960s. In 1963, a party consisting of Don Stockard, Tom Johnson, and Carl Blomgren tried a westbound crossing. Three years later, J. Vin Hoeman, Dave Johnston, and Dr. Grace Jansen made an eastbound attempt. Both attempts were unsuccessful.
In the spring of 1968, the first documented mountaineering party succeeded in crossing the icefield. Ten people were involved in the crossing, which went from Chernof Glacier east to Exit Glacier. Expedition members included Bill Babcock, Eric Barnes, Bill Fox, Dave Johnston, Yule Kilcher and his son Otto, Dave Spencer, Helmut Tschaffert, and Vin and Grace (Jansen) Hoeman. As noted above, Yule Kilcher, Dave Johnston, Vin Hoeman, and Grace Hoeman were veterans of previous attempts; of the ten, only four–Bill Babcock, Dave Johnston, Yule Kilcher, and Vin Hoeman–hiked all the way across the icefield. The expedition left Homer on April 17, bound for Chernof Glacier; eight days later, they descended Exit Glacier and arrived in Seward. Along the way, the party made a first-ever ascent of Truuli Peak, a 6,612—foot eminence that protrudes from the northwestern edge of the icefield near Truuli Glacier.
In 1983 Roman Dial and Jim Lokken skied from the edge of the Skilak Glacier to the Tustumena Glacier edge in a single day and in 1984 Dial skied from the Skilak to the Chernof solo in one day as part of the Alaska Mountain Wilderness Classic.