The Next Loop 50-Mile Challenge - Lake Carl Blackwell - Stillwater
Stillwater, United States • 21 Nov 2026
The Next Loop: 50 Mile Challenge, Lake Carl Blackwell, Stillwater, OK
This event is a loop-based trail race offering two challenge distances. The course is described as a roughly 3.1 mile (5K) loop with a main aid station available every lap and personal gear staging at a vehicle or in a designated area. The 50 mile format requires 16 loops and is run as a continuous, not hourly, race with a 12 hour hard cutoff. Minor variation in loop distance is expected due to terrain.
Chip timing is used, with splits recorded and posted for every completed loop so athletes and crews can monitor pacing and progress. The event enforces a field limit of 75 runners and provides medical and safety oversight consistent with ultra distance standards. Pacers are permitted beginning at 4:00 PM and must check in, wear official pacer identification, and enter and exit the course at the start/finish area; pacers may not carry additional gear beyond standard trail running allowances.
Age group divisions include Open, Masters (ages 50 to 69), and Grand Masters (ages 70 and older). Registration for the event closes on Fri, Nov 20 at 11:59 PM CT. The event is presented by EverFurther Events and is listed alongside a 40 mile challenge at the same location. Visit the organization's website for the most recent information.