Worlds End Ultramarathon

The Worlds End Ultramarathon, held in Forksville, Pennsylvania, offers challenging 100k and 50k trail races through the scenic Loyalsock Trail, Loyalsock State Forest, and Worlds End State Park in the Endless Mountains. Known for its rugged, technical single-track trails, the 100k features about 12,000 feet of elevation gain with stunning vistas, waterfalls, and rock formations. The 50k covers half the distance and elevation but still provides a tough, scenic experience.

Both races include multiple aid stations with diverse food options. The event emphasizes a wild, rustic atmosphere and is part of Pennsylvania’s Triple Crown of Mountain Running, attracting experienced ultrarunners seeking a demanding mountain challenge. Visit the organization's website for the most recent information.