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Green Monster Trail Challenge

Wellsboro, United States • 12 Oct 2025

Green Monster Trail Challenge in Wellsboro, PA, in the Tioga State Forest north of PA Grand Canyon, offers 15K, 25K and 50K options for runners and hikers. The course features rolling single-track, steep ascents, numerous stream crossings and technical descents through rugged mountain terrain. Elevation gain is about 1,700 ft for 15K, 4,000 ft for 25K, and 7,800 ft for the 50K. The event combines challenging trails with a festive atmosphere: well-maintained aid stations, a post-race feast, music, finisher medals, and sponsor swag. Capacity is limited to 350; refunds are not offered; no day-of registration; race-day vibe is supportive. 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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