TARC Fall Classic
Carlisle, United States • 5 Sep 2026
Trail Animals Running Club Fall Classic : Great Brook Farm State Park
The Trail Animals Running Club Fall Classic is scheduled for Saturday, September 5, 2026, at Great Brook Farm State Park in Carlisle, Massachusetts, with the start/finish at Hart Barn Ski Center, 1018 Lowell St. Distances offered include:
- 10K
- Half marathon
- 20 mile
- 50K
- 50 mile
- Yeti Mischief Mile
- Free youth fun run (about 0.5 miles around the corn field)
Course, aid, and event policies
The 50M, 50K, and 20M use a 10 mile loop with aid stations every 3 to 4 miles; 20M runs two loops, and 50K adds field laps for the extra mileage. The Half and 10K use a 10K loop with aid primarily at the start/finish area. The youth course is fully flagged and staffed by volunteers. The trail is marked with flagging and signs; organizers recommend downloading the GPX file for navigation. This is a cupless race, and participants must bring their own hydration. Aid stations provide water, hydration drinks, fruit, salty snacks, sandwiches, sweet snacks, vegan options, and pickles; offerings are vegan friendly.
The event enforces time cutoffs for long distances (50K/50M have a 13 hour completion window) and additional cutoffs at a road crossing. Pacers are not allowed; crew access is limited to the start/finish aid station. Registration closes before race week, the event can sell out, and there is no race day registration. Entry cost is $25 for paid distances; the youth fun run is free and youth entries (19 and under) receive a $10 discount for paid distances. The event follows Leave No Trace principles and has provisions for adaptive athletes with organizer approval. Parking is limited, with roughly 500 spaces and a park parking fee of $3 per car. Visit the organization's website for the most recent information.