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Green Monster Trail Challenge

Wellsboro, United States • 11 Oct 2026

Event Details

The Green Monster Trail Challenge takes place on October 11, 2026, in the Tioga State Forest near Wellsboro, Pennsylvania, north of the Pennsylvania Grand Canyon. The event is organized by the Tyoga Running Club.

Distances

The event offers three trail running distances:

  • 50K
  • 25K
  • 15K

Course Information

The course uses trails within the Tioga State Forest, including single-track trails, deer trails, and features like "Frankenstein's Forehead." The terrain includes rolling trails, steep climbs, stream crossings, and technical descents. The total ascent for the 50K is listed as 7,800 feet, for the 25K as 4,000 feet, and for the 15K as 1,700 feet.

Participant Information

There is a participant cap of 350 people. There is no day-of registration; a wait-list operates on a first-come, first-served basis if the event sells out. Registration closes on September 27, 2026. The organizer states there is a no-refunds policy.

What's Included

Participants receive a race day t-shirt, Darn Tough socks, a finisher's medal, and other swag giveaways. The event features aid stations maintained by local groups, a post-race meal and drinks, and music and entertainment. Visit the organization's website for the most recent information.

United States Pennsylvania Wellsboro

Race information

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