The Next Loop Endurance Series - Lake Carl Blackwell - Stillwater - Stillwater

NOV
21
2026
A loop based endurance race on a 3.1 mile trail at Lake Carl Blackwell in Stillwater. Runners start a new lap each hour and each completed loop counts toward official distance and total time.
Sat 21 Nov 2026
50 kilometers Marathon Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

The Next Loop: Endurance Series, Lake Carl Blackwell, Stillwater, OK

The event uses a loop based endurance format on a clearly marked 3.1 mile (5K) trail loop at Lake Carl Blackwell Park in Stillwater, Oklahoma. Runners begin each loop on the hour and may choose whether to start a new lap; each completed loop counts toward the runner’s total distance.

Course and scoring details note that loop times are recorded from the start of the hour to when a runner crosses the finish line. Final results are ranked by the number of loops completed and the combined total time. The format does not use cutoffs or penalties for stopping; completed loops still count toward the official result.

An aid station is available at the central base area before each loop to provide hydration and basic nutrition. The centralized loop format also allows friends, family, and crew to offer support between laps.

Distances recorded by loops include:

  • 1 loop = 5K
  • 2 loops = 10K
  • 4 loops = Half Marathon
  • 9 loops = Marathon
  • 10 loops = 50K

The event is organized by EverFurther and takes place at Lake Carl Blackwell, 11000 W Hwy 51, Stillwater, OK 74074. Visit the organization's website for the most recent information.

50 km
10 Loops
Marathon
9 Loops
Half Marathon
4 Loops
10 km
2 Loops
5 km
1 Loop
10 Hour Endurance
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.