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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 course features rugged terrain with steep climbs (up to 7,800 feet total ascent for the 50K), technical descents, stream crossings, and rolling single-track trails. Designed for all ages and abilities, the race emphasizes community spirit with well-maintained aid stations staffed by local groups, post-race food, music, and entertainment. Limited to 350 participants, the event showcases the natural beauty of the Pennsylvania mountains while providing a tough but rewarding outdoor challenge. Visit the organization's website for the most recent information.

United States Pennsylvania Wellsboro

Race information

Website
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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