WTF Dark Sky 220 / Cherry Springs 110 / Wooly 50k

Discover the Best of Pennsylvania Trail Running

The Dark Sky 220, Cherry Springs 110 and Wooly 50K adventure runs. The PA-Based events offer an experience like none other. Operating out of an historic home in Woolrich, PA, we offer a place for you and your crew to use as an operations base, a floor (or bed if you're lucky) to crash on, and most importantly, a family feel to our event. It's like the Waltons held a trail race - IYKYK!
All proceeds go to trail running events and professional coaching scholarships for veteran athletes who are selected to the WTF Athlete Team. Small and intimate, but never easy! Just like our PA Mountains!

Experience the very best of what Pennsylvania has to offer—cooler temps, breathtaking vistas, and forest floors lit up in a kaleidoscope of fall colors. You choose the distance, the style, and the adventure as you create your own challenge on our stunning trail system.

With options ranging from a full 220-mile course boasting over 40,000 feet of elevation gain, to the back half at 110 miles with nearly 20,000 feet of vert, this is not your average run—this is a true DIY adventure.

Choose Your Style:
Supported: Bring your crew and enjoy the luxury of pacers who can mule from the start, with crew access at designated points.
Self-Supported: Cache your own supplies along the route—your strategy, your pace.
Unsupported: Go old-school like the pioneers—carry everything you need from the start.
Team Option: Team up with friends and take on the challenge together, either Supported or Self-Supported.