Green Monster Trail Challenge

Wellsboro, United States • 12 Oct 2025

The Green Monster Trail Challenge is a demanding trail running and hiking event held in the scenic Tioga State Forest near Wellsboro, Pennsylvania. Offering three distance options—15K, 25K, and a challenging 50K—the race features significant elevation gains of 1,700, 4,000, and 7,800 feet respectively. Participants navigate rugged single-track trails with steep climbs, stream crossings, and technical descents, making it suitable for experienced athletes seeking a tough mountain course. The event includes well-maintained aid stations, post-race food and entertainment, finisher awards, and race day swag. Limited to 350 participants, it emphasizes community support and local involvement, creating a spirited and memorable trail experience. Visit the organization's website for the most recent information.

Race information

50 km
7800 m+
50k
25 km
4000 m+
25k
15 km
1700 m+
15k
Visit the organization's website for the most recent information.
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