Green Monster Trail Challenge

Wellsboro, United States • 11 Oct 2026

Green Monster Trail Challenge

The Green Monster Trail Challenge offers three trail distances through the mountains of Tioga State Forest near Wellsboro, Pennsylvania on October 11, 2026. The event is open to runners and hikers and is held at 176 Straight Run Road, Wellsboro, PA 16901.

Course options and total ascent:

  • 15K - 1,700 ft total ascent
  • 25K - 4,000 ft total ascent
  • 50K - 7,800 ft total ascent

The event features maintained aid stations along the courses, race day swag, finisher awards, post-race lunch, and music and entertainment. Registration is available online and the field is limited to 350 runners; a wait-list will be created on a first-come-first-serve basis if the event reaches capacity. The organizer states a no refund policy: no refunds, no deferrals, no switches, and no transfers.

Bag and race bib pick-up ends half an hour before the race start. Additional event details, maps, directions, and local lodging information are provided by the organizer. Visit the organization's website for the most recent information.

Race information

50 km
50k
25 km
25k
15 km
15k
Visit the organization's website for the most recent information.
Trail runs nearby

Take on a scenic single track loop around Hills Creek Lake in Wellsboro, PA and run as many 3 mile loops as you can in 3, 6 or 12 hours, or field a 12 hour relay team. Camping is available nearby and the event runs rain or shine.

A trail race in Tiadaghton State Forest offering 25K and half marathon distances that traverse the Algerine Wild Area and Red Run on technical single track with stream crossings and scenic viewpoints.

A 50k out and back on the West Rim Trail near Wellsboro, Pennsylvania on July 18, 2026. Organized by the Tyoga Running Club with event updates shared on Facebook.

A free 5k trail run for children aged 12 and under near the east rim of the PA Grand Canyon, with finisher medals, T shirts and a post race lunch. The event emphasizes fresh air, new friends and ice cream.