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