TARC Fall Classic

SEP
5
2026
Join the Trail Animals Fall Classic at Great Brook Farm for scenic trails and distances from youth fun runs to 50 mile ultras. Community vibe, limited spots, and on course aid make this a favorite, so bring your own hydration and register early.
Sat 5 Sep 2026
50 miles 50 kilometers 20 miles Half Marathon 10 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

The Trail Animals Running Club Fall Classic is scheduled for Saturday, September 5, 2026, at Great Brook Farm State Park in Carlisle, Massachusetts. The start/finish area is at the Hart Barn Ski Center and field (1018 Lowell St). The event offers multiple distance options and a free youth fun run. Registration for paid distances is a flat fee of $25; youth discounts and a USATF MUT Youth Initiative discount are available. Registration closes before race week and the event has a sell-out history. The organizer enforces a strict no-refund, no-transfer policy except for emergency deferrals and offers a pregnancy deferral option for up to two years.

Course and logistics

Distances:

  • 10K
  • Half marathon
  • 20 mile
  • 50K
  • 50 mile
  • Yeti Mischief Mile
  • Free youth fun run (~0.5 miles)

The 50M/50K/20M use a 10-mile loop with aid stations about every 3 to 4 miles; 20M runners do two loops. 50K entrants run an extra pair of loops in the open field at the start to add distance before joining the 10-mile loop. The Half and 10K use a 10K loop with aid only at the start/finish; the Half includes an additional field loop. The youth course is marked with flags around the corn field and will have volunteer guidance.

This is a cupless race; participants must bring their own hydration system. Trail briefings are mandatory. Pacers are not allowed; crew access is limited to the start/finish area. Parking is limited (about 500 spots for 600+ participants) and a park parking fee applies. The event follows Leave No Trace principles and collects food donations for a local pantry. Adaptive athletes are welcome with specified accommodations. Visit the organization's website for the most recent information.

50 mi
50 Mile Waitlist
50 mi
50 Mile
50 km
50k Waitlist
50 km
50k
20 mi
20 Mile Waitlist
20 mi
20 Mile
Half Marathon
Half Marathon
Half Marathon
Half Marathon Waitlist
10 km
10k
10 km
10k Waitlist
Free Youth Fun Run
Free Youth Fun Run Waitlist
Yeti Mischief Mile Endurance Division
Yeti Mischief Mile Endurance Division Waitlist
Yeti Mischief Mile Relay Division
Yeti Mischief Mile Relay Division Waitlist
Yeti Mischief Mile Solo Division
Yeti Mischief Mile Solo Division Waitlist