White Mountains 100

MAR
22-23
2026
A winter 100 miles loop in Alaska's White Mountains for runners, skiers, and bikers, with aid roughly every 20 miles and a 40 hour cutoff. The mostly snowmachine trail course features ridgelines, frozen overflow, and over 8,000 feet of climbing.
22-23 Mar 2026
100 Miles

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White Mountains 100

The White Mountains 100 is a winter endurance event covering 100 miles on a counterclockwise loop through the BLM White Mountains National Recreation Area. Participants may travel by foot, ski, or bike and have 40 hours to complete the course. The race starts and finishes at the Wickersham Dome trailhead at Milepost 28 on the Elliott Highway, approximately one hour by road from Fairbanks. The route follows mostly partially maintained snowmachine trails and includes more than 8,000 feet of elevation gain.

The route passes rolling hills, black spruce forests, frozen lowlands, ridgelines, meadows, and wide open vistas. Notable sections include a climb above treeline to the Cache Mountain Divide, limestone jags, and a mile long stretch of frozen overflow known as the "ice lakes." Wind, drifting snow, Arctic temperatures, water crossings, and wildlife encounters are common on this remote course. Aid stations roughly every 20 miles provide shelter, hot and cold beverages, warm food at checkpoints, limited sleeping options, and basic medical support. Entrants are required to have recent winter backcountry experience equivalent to finishing a winter event over 25 miles or over 24 hours in the last two years and are expected to be self sufficient with appropriate food, clothing, lighting, insulated water, and emergency gear. Visit the organization's website for the most recent information.

100 mi
100 Miles