25K Course Description

The Green Monster Trail Challenge is 16.6 mile race through the Mountains in the Tioga State Forest of Asaph, PA.

The race begins with 1.0 mile warm-up on Straight Run Road before reaching the Green Monster trail head on Straight Run Trail. Here you will begin a 1000ft ascent on Deer Trail, which is a single track trail that ascends up the face of Mt. Nesmuk. After your climb, you will be able stride out on Stone Road, a gradual logging across the mountain top. Turn left and head down the technical beginnings of Water Trough Trail that will turn into a 900ft descent on Horse Run Trail reaching the Canada Run aid station at mile 5.0 located on Canada Run Road.

After refueling, immediately head into the woods to the first stream crossing before heading up an old logging grade named Oil Well Hollow. You will soon come to Bark Slide Trail, a 0.5 mile long grueling climb with 550ft ascent. Catch your breath on Matson Road before turning left onto Lost Trail as you descend back down to Oil Well Hollow. Finish your ascent up Oil Well Hollow to recover at the Baldwin Run aid station at mile 8.0 located on Baldwin Run Road.

Continue down Carpenter Trail, which is a runnable technical descent with multiple stream crossings before popping out onto Spoor Hollow Rd. Stretch out along Spoor Hollow Road and Turn Right onto Plantation Trail. Plantation Trail is a nice rolling single track run winding across the mountain top, only after a steep 700ft ascent properly named as “Stinger”. You will come to the intersection of Spoor Hollow Road and Baldwin Run Road, here you will find the Stone Road Aid Station at mile 11.0 located on Baldwin Run Road.

Head down the fast paced Jim Close Trail crossing Straight Run Road and merging onto Birchstill Trail. Birchstill Trail is a scenic single track ascent named after old birch stills once located in the area, thus bringing you to the final Broad Ridge aid Station at mile 13.5.

Continuing across Broad Ridge, prepare yourself for the only descent, good or bad, that you may remember for the day. Frankenstein’s Forehead is a 800ft technical descent into the Straight Run stream system that will have you cursing the race director by the time you reach the bottom. Here you will find the GM25K/GM50K split, turn left onto Straight Run Trail, this is your reward for pushing yourself as hard as you did. Wind down through the scenic Straight Run Trail system crossing several streams which will depend on water levels. Turn right onto Straight Run Road a sprint to the finish!