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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 Wellsboro, Pennsylvania, within the scenic Tioga State Forest near the PA Grand Canyon. It offers three race distances: 15K, 25K, and a challenging 50K, featuring total ascents of approximately 1,700, 4,000, and 7,800 feet respectively. The course includes rolling single-track trails, steep climbs, stream crossings, and technical descents, designed to test even well-conditioned athletes. The event emphasizes community spirit with local aid stations, post-race food, music, and entertainment. Limited to 350 participants, it provides race day swag, finisher medals, and a festive atmosphere celebrating the rugged mountain terrain. 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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