The Next Loop Endurance Series - New England

APR
11
2026
Test your endurance on a scenic five kilometer trail loop in Wrentham Massachusetts. This supported race offers forty and fifty mile challenges with a twelve hour cutoff and consistent access to aid stations.
Sat 11 Apr 2026
10k 15k Half Marathon Marathon

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Event Overview

The Next Loop Endurance Series - New England is a trail race held in Wrentham, Massachusetts. The event focuses on a loop-based format that emphasizes logistical simplicity and athlete support. Participants navigate a 3.1-mile (5K) trail loop, passing a fully stocked aid station at the end of every lap.

Distance Options

The event features two primary endurance challenges:

  • 50 Mile Challenge: A continuous run requiring 16 completed loops of the course.
  • 40 Mile Challenge: A continuous long-distance endurance run.

Course and Logistics

The race utilizes a trail-based loop where small variations in distance may occur due to the terrain. Runners have access to a dedicated staging area where they can store personal gear, and this area is accessible every 5K. The event is chip-timed, with splits recorded and posted for every completed loop to help athletes track their performance trends and pacing.

A 12-hour hard cutoff is enforced for the 50-mile distance. Athletes can stage their gear at their vehicles or in a designated area. Pacers are permitted to join participants on the course starting at 4:00 PM, provided they check in at the official station and follow standard trail-running rules regarding assistance.

Divisions and Participation

The event includes several age group divisions and a field limit of 75 runners. The recognized divisions are:

  • Open
  • Masters: Ages 50-69
  • Grand Masters: Ages 70+

Participants are expected to have the experience and readiness appropriate for ultra-distance running. This race is run as a continuous event and is not scored using an hourly loop format. Visit the organization's website for the most recent information.

50 km
50k
Marathon
Marathon
Half Marathon
Half Marathon
15 km
15k
10 km
10k
5 km
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