The Next Loop Endurance Series - New England

OCT
31
2026
A continuous 50-mile trail race on a 3.1-mile loop in Wrentham, MA, with chip timing, a 12-hour cutoff, and a 75-runner field limit.
Sat 31 Oct 2026
50 miles 40 miles

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The Next Loop 50 Mile Challenge

The Next Loop 50 Mile Challenge is a continuous trail race held in Wrentham, MA on a measured 3.1-mile (5K) loop. Competitors complete sixteen laps to reach 50 miles; minor distance variation due to terrain is expected and accepted. The event is limited to 75 runners and uses chip timing with splits recorded and posted for every completed 5K loop.

Aid and logistics are centralized at a single, fully stocked start/finish aid station that serves every lap. Athletes may stage personal gear at their vehicle or in a designated staging area and access a dedicated 50-mile staging zone separate from hourly-loop athletes. Medical and safety oversight is provided consistent with ultra-distance standards.

The race uses a 12-hour hard cutoff. Pacers are permitted beginning at 4:00 PM; pacers must check in at the pacer station, wear official identification, and enter and exit the course at the start/finish area only. The format is a continuous 50-mile run run alongside other Next Loop Endurance Series events, with overall finishing time determining placement. Pricing and registration windows are published for the event; registration closes on Fri, Oct 9 at 11:59 PM ET. Visit the organization's website for the most recent information.

50 mi
50 Mile Challenge
40 mi
40 Mile Challenge
The Next Loop Hourly Challenge
The Next 12hr Challenge

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