Trail
50 Mile
80.5 km
Start: Nov 23, 02:00 PM
40/50 M Challenge - LCB Nov
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Trail in United States, Stillwater
Distances
Trail
40 Mile
64.4 km
Start: Nov 23, 02:00 PM
About
A continuous-loop ultra-distance trail challenge at Lake Carl Blackwell in Stillwater, OK, offering 40- and 50-mile options on a scenic 3.1-mile loop with full course support and a strict time cutoff.
Catering & aid stations
Fully stocked aid station at every lap; runners may access personal supplies at their staging area each loop.
Pacers
Pacers are allowed per event rules (location-specific and time-based). The 40/50 Mile Challenge runs continuously; while Next Loop participants start on the hour, 40/50 Mile Challenge runners race continuously and are scored separately.
Results
View official resultsTypical weather in Stillwater
Monthly averages based on historical data (2000–present).
Jan48°30°
↑ 07:39
↓ 17:37
Feb52°33°
↑ 07:17
↓ 18:09
Mar63°44°
↑ 07:39
↓ 19:36
Apr71°52°
↑ 06:55
↓ 20:02
May79°62°
↑ 06:23
↓ 20:28
Jun88°71°
↑ 06:12
↓ 20:48
Jul93°76°
↑ 06:24
↓ 20:46
Aug92°75°
↑ 06:48
↓ 20:19
Sep85°67°
↑ 07:12
↓ 19:36
Oct73°55°
↑ 07:36
↓ 18:53
Nov60°44°
↑ 07:06
↓ 17:21
Dec50°34°
↑ 07:33
↓ 17:16
FAQ
What distances are offered?
40 miles and 50 miles on a continuous loop.
Is there a time limit?
Yes; the event uses a 12-hour time limit.
Are pacers allowed?
Yes, pacers are allowed per event rules (location-specific and time-based).
Where is the event held?
Lake Carl Blackwell, Stillwater, OK.
Last updated: Jun 5, 2026, 08:11:57 PM
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