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Green Monster Trail Challenge

Wellsboro, United States • 12 Oct 2025

Event overview

The Green Monster Trail Challenge is a trail race in Wellsboro, PA, set in the mountains of the Tioga State Forest north of the PA Grand Canyon. The event on October 12, 2025, offers three distance options and varied terrain. The course includes rolling single-track trails, steep climbs, stream crossings, and technical descents. The event is organized by the Tyoga Running Club and uses local volunteers and sponsors to support aid stations and on-course services.

Distances and total ascent:

  • 15K - 1,700 ft total ascent
  • 25K - 4,000 ft total ascent
  • 50K - 7,800 ft total ascent

Logistics and entries

Entry is via online registration and the field is limited to 350 participants. Registration closes on September 28, 2025, and a wait-list is used if the event reaches capacity. There is no day-of registration. The event has maintained aid stations, post-race food and entertainment, race-day shirts and sponsor giveaways, and finisher medals. The 50K distance has cut-off time limits (updated as of 2023). The race operates a strict no-refund policy: no refunds, deferrals, switches, or transfers. The event location is listed as Straight Run Road / 176 Straight Run Road, Wellsboro, PA. 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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