12hr ultramarathons in Alaska, United States

Demanding hybrid format with required lifts, assigned 50K or 100K runs, and a final challenge under accumulated fatigue

One-mile loops on gravel and Meadow Loop trails at Skeetawk Ski Area, 200 feet of elevation gain per lap, scenic Hatcher Pass views, flexible time limits.

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