40/50 Mile Challenge, Lake Carl Blackwell 2026
40/50 Mile Challenge, Lake Carl Blackwell is a 40 Miles trail ultra in Stillwater, OK on November 21, 2026. See its terrain, cutoffs and how it fits your running on Find My Ultra.
- Distance
- 40 mi (40 Miles)
- Elevation Gain
- Not published
- Max Altitude
- Not published
- Cutoff
- 12 hrs