The Next Loop Endurance Series - Lake Carl Blackwell

NOV
21
2026
A loop-based endurance event at Lake Carl Blackwell offering hourly 5K loops, a 12-hour continuous challenge, solo 40 and 50 mile options, and 2 or 4 person 50 mile relays.
Sat 21 Nov 2026
50 miles 40 miles

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The Next Loop Endurance Series - Lake Carl Blackwell

The Next Loop Endurance Series takes place on November 21, 2026 at Lake Carl Blackwell Park with race headquarters at Shredders Gulch Campground. The event centers on a clearly marked 3.1-mile trail loop used for all formats and a central start/finish base area with aid station support.

Multiple formats let participants measure distance in different ways: hourly loop entries, a timed continuous challenge, solo ultra distances, and team relays. Aid is available every loop and athletes may access personal gear from a staging area between loops. The event is described as friendly to families, crews, runners, walkers, and hikers.

Key rules and support:

  • Pacers permitted after the fourth loop; pacers must check in, wear identification, and follow entry and exit procedures.
  • Medical and safety oversight follows ultra-distance standards.
  • Defined-distance events require completing the chosen distance within the event cutoff.

Available event formats include:

  • Hourly Challenge with approximately 3.1-mile loop every hour, up to ten loops.
  • 12 Hour Challenge continuous attempt measured by completed loops.
  • 40 Mile Challenge solo continuous distance.
  • 50 Mile Challenge solo continuous distance.
  • 50 Mile Team Relay for two runners.
  • 50 Mile Team Relay for four runners.

Entry fees vary by format. The event is organized by EverFurther Events. Visit the organization's website for the most recent information.

50 mi
The Next 50m Challenge
50 mi
50m 4 Person Team Relay
50 mi
50m 2 Person Team Relay
40 mi
The Next 40m Challenge
Hourly Challenge (10 Hours)
12 Hour Challenge
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