WTF Dark Sky 220

WTF Dark Sky 220 / Cherry Springs 110 is a nonprofit trail adventure in north-central Pennsylvania, centered around Lock Haven with start points at Lyman Run State Park for the 110-mile option and a Dark Sky route near Cherry Springs for the 220-mile event. Runners choose between 220 miles (over 40,000 ft of elevation gain) or 110 miles (about 20,000 ft) and one of four styles: Supported, Self-Supported, Unsupported, or Team. The DIY course offers plentiful water sources and a GPX route on Caltopo.

Proceeds benefit the Warrior Trail Foundation, funding veteran athletes, coaching, and well-being resources. Visit the organization's website for the most recent information.