The Next Loop 50-Mile Challenge - Lake Carl Blackwell - Stillwater
Stillwater, United States • 21 Nov 2026
The Next Loop 50-Mile Challenge at Lake Carl Blackwell
The Next Loop 40/50 Mile Challenge in Stillwater, OK is a loop based trail event held at Lake Carl Blackwell. The event offers multiple long-distance formats and uses a continuous race style with a single start/finish aid station that serves runners every lap.
Distances include:
- 50 Mile Challenge
- 40 Mile Challenge
The 50 mile format uses chip timing and records loop splits for every completed lap. Placement is determined by overall finishing time rather than an hourly scoring format. A 12 hour hard cutoff applies to the 50 mile race. The course is trail based and minor distance variation may occur due to terrain.
Logistics include a dedicated staging area for 50 mile athletes and the ability to leave personal gear at a vehicle or in the designated staging area. A main aid station is available each lap. Pacers are permitted beginning at 4:00 PM; pacers must check in at the designated pacer station, wear official pacer identification, and enter and exit the course at the start/finish area only. Multiple pacers are allowed one at a time.
The event lists a field limit of 75 runners. Registration closes on Fri, Nov 20 at 11:59 PM CT. Visit the organization's website for the most recent information.