Get ready to tackle a demanding 103-mile loop through Pennsylvania's stunning backcountry around Pine Creek in Waterville, where you'll climb roughly 20,000 feet across iconic trails like the Mid State Trail, Black Forest Trail, and West Rim Trail—just know that only about half the starters typically finish this one. To get in, you'll need to register starting October 1st at 6pm EST and have already completed at least one official 50K trail race since January 1, 2024. You can run either Supported (with crew and pacing help) or Unsupported (going solo) while navigating everything from narrow single-track to old logging roads, where you might encounter bears, bald eagles, and rattlesnakes.