The Next Loop Endurance Series – Lake Carl Blackwell
11000 W Hwy 51, Stillwater OK, 74074, USA
One 5K loop at a time — go as far as your day allows. The Next Loop Endurance Series at Lake Carl Blackwell is a scenic, runnable trail race on a 3.1-mile (5K) loop through rolling lakeside terrain, open grasslands, and wooded sections with expansive views of the lake. Pick your distance — 5K, 10K, 15K, half, 18K, marathon, or 50K — and roll out with a new wave every hour on the hour from 7:00 AM. Every completed loop counts: no cutoffs to fear, no eliminations, just steady forward progress with a fully stocked aid station and your crew waiting at the start/finish each lap. A mix of dirt paths, grass, and lightly packed earth with gentle rolling elevation. Whether it’s your first 5K or your first 50K, the loop meets you where you are. Register at RaceFeed.








