When is Green Monster Trail Challenge?

Green Monster Trail Challenge takes place on Oct 11, 2026. That's in 4 months.

Where is Green Monster Trail Challenge located?

Green Monster Trail Challenge is held in Wellsboro, Pennsylvania, United States.

What distances are available at Green Monster Trail Challenge?

Green Monster Trail Challenge offers the following distances: 50K, 25K, 15K.

What is the typical weather for Green Monster Trail Challenge?

Based on historical data, you can expect temperatures between 41°F and 61°F on race day. There's approximately a 15% chance of precipitation.

Green Monster Trail Challenge (15K-50K) - Oct 11, 2026 | Wellsboro, PA

Prepare to unleash your inner beast at the Green Monster Trail Challenge, set against the stunning backdrop of Wellsboro, PA, on October 11, 2026. Offering formidable distances of 50K, 25K, and 15K, this race is renowned as "one darn tough mountain race," challenging even the most seasoned trail runners with its relentless terrain. Nestled in the heart of the Tioga State Forest, just north of the Pennsylvania Grand Canyon, runners can expect a wild and unforgettable experience amidst the vibrant autumn foliage.

The Green Monster course is a true test of grit, featuring a demanding mix of beautiful rolling single track, hellacious steep climbs, and gnarly technical descents. Prepare for ascents like the infamous "Stinger," a steep 700-foot climb, and the grueling 550-foot "Bark Slide Trail," spanning just half a mile. The 50K distance alone boasts an impressive 7,800 feet of total ascent, while the 25K tackles 4,000 feet, promising a course with significant elevation gain per mile. Runners will also navigate abundant stream crossings, rocks, roots, and ruts, demanding constant focus and agility. Typical race day conditions in mid-October offer crisp air with highs around 61°F and lows around 41°F, with a minimal 15% chance of precipitation, providing ideal running weather for tackling the challenging trails.

Beyond the challenging trails, the Green Monster Trail Challenge is celebrated for its vibrant community atmosphere. Enthusiastic local clubs and organizations staff the aid stations, providing not only ample nutrition but also an incredible amount of cheer and encouragement, truly acting as the "heartbeat of this event." Participants can look forward to a rewarding post-race meal, music, entertainment, unique race day swag, and finisher awards. Starting near 176 Straight Run Road, runners park at the USGS Lab and walk a quarter-mile to the start/finish area. With a participant limit of 350, this popular event often reaches capacity well before registration closes, so securing your spot early is highly recommended for this unforgettable Pennsylvania Wilds adventure.