TARC Spring Classic

Event overview

The TARC Spring Classic takes place on Saturday, April 25, 2026 in the Jericho Town Forest in Weston, Massachusetts. The race offers multiple trail distances:

• 10K
• Half Marathon
• Marathon
• 50K
  A free youth fun run is offered separately. The start/finish is located at 292 Concord Road, Weston, MA. Entry across the paid distances is listed at $25; the event typically sells out. Online registration closes at the beginning of race week and no race day registration is offered.

Course and aid

The course is built as an approximately 10K loop that is relatively flat and smooth; participants complete multiple laps according to their chosen distance. The start/end of the loop hosts the course’s only aid station. This is a cupless event, so participants must carry their own hydration system. The aid station provides vegan friendly options including hydration products, fruit, bars, snacks, sandwiches, chips, and pickles. The route will be marked with flagging and signs at major intersections; organizers recommend reviewing course maps and loading the GPX file to a GPS device. If a runner goes off course they must backtrack; GPS review may be used to verify course compliance.

Logistics and policies

Parking is in a grassy field at the start/finish with volunteers directing vehicles; additional parking may require a short walk. Pacers are not allowed and crew access is limited to the start/finish aid area. Runners must start their last loop by 2:15 PM and finish by 4:00 PM; sweepers will remove markers during the afternoon. The event follows Leave No Trace principles. Adaptive athletes are welcome with specific equipment allowances and any needed approvals. Deferral and refund policies are posted; refunds are not provided. Visit the organization's website for the most recent information.