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
50 Mile Challenge 40 Mile Challenge

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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 Mile Challenge
40 Mile Challenge