Ultramarathons in Alaska, United States in 2027

100-mile marked winter loop through frozen rivers, swamps, and wooded trails with mountain views, possible aurora sightings, and wildlife encounters

50K marked winter loop on frozen rivers, swamps, and wooded trails in Alaska with mountain views and possible sightings of wildlife and dogsled teams

Maintained snowmachine trails near Fairbanks: 55 miles of major climbs, fast descents and blind turns above the valley floor.

Winter routes over Caribou Hills above Kachemak Bay with 50 km and 100 km options for skiing, biking, or running near Homer, Alaska.

Scenic loop course along the Tanana River and through Rosie Creek forest, featuring a frozen landscape and a 45-mile endurance option

Trail loops featuring flat, steep, and rolling terrain with wide paths, narrow singletrack, mud, ice, natural views, and unpredictable conditions

Remote Alaska winter ultra amid jagged limestone peaks, with steep climbs, glare ice, drifting snow, and constantly changing trail conditions.

Multi-hour loop course on scenic trails near University of Alaska Fairbanks, forested terrain, unified finish atmosphere, festive post-race BBQ

Looped 4.167-mile course under the midnight sun, last-runner-standing format, Bronze Ticket qualifier for regional progression

Historic Denali Highway route with 131 miles of rugged Alaskan terrain, 8,800 feet of elevation gain, panoramic Alaska Range views, and Arctic daylight

Overnight point-to-point relay through Anchorage bike paths and Turnagain Arm, set in Alaska’s long summer twilight.

1.2-mile loop under Alaska’s midnight sun, with a shared aid station, basecamp atmosphere, and 50- and 100-mile options.

Wrangell Island community ultra with paved highway stretches and trails, reflecting a rugged, remote setting and a self-reliant feel.