The Next Loop - Lake Carl Blackwell, OK (Nov 21, 2026)
Course Description:
Lake Carl Blackwell, Stillwater, OK
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The course at Lake Carl Blackwell features a scenic and runnable trail system that loops through rolling lakeside terrain, open grasslands, and wooded sections. Runners will complete a clearly marked 3.1-mile (5K) loop, returning each lap to the same central start/finish area and fully stocked aid station.
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The trail surface is a mix of dirt paths, grass, and lightly packed earth, with gentle rolling elevation that adds interest without becoming overly technical. The course offers good footing and wide sections, making it approachable for newer trail runners while still engaging for experienced endurance athletes over multiple loops.
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With expansive views of the lake and surrounding landscape, the loop-based format allows runners to pace themselves, refuel easily, and decide how far they want to go—whether that’s one loop or an extended endurance effort. The combination of natural beauty, manageable terrain, and centralized support makes Lake Carl Blackwell an excellent venue for athletes of all experience levels.
Location: Lake Carl Blackwell
11000 W Hwy 51, Stillwater, OK 74074
Distances Offered: 5K, 10K, 15K, 1/2 Marathon (13.1M), 18K, Marathon (26.2), 50K
Who is The Next Loop Endurance Series For?
The Next Loop Endurance Series meets athletes wherever they are in their endurance journey.
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New Runners: If you’re building confidence or working toward your first 10K, Next Loop gives you structure, support, and a low-pressure way to test yourself.
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Experienced Runners: Training for a marathon or half? Use multiple loops to dial in pacing, nutrition, and mental resilience in a controlled environment.
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Ultra Curious​: Ready to go long? Stack loops, push limits, and stop on your terms. Every distance is earned — and honored.No pressure. No limits. Just forward progress.
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Progression, Not Elimination
What makes The Next Loop Different?
Traditional endurance events force athletes to commit to a distance before the race begins.​
The Next Loop Endurance Series is different.​Athletes start together, complete one 5K loop at a time, and choose whether to continue.Every completed loop counts. When you decide you’re done, your effort is honored — no missed cutoffs, no failure.
This format encourages athletes to return again and again, building endurance through experience, not pressure.