US Road Running - Stillwater
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Event overview
The Ninja event takes place on August 1, 2026, at Boomer Lake Park in Stillwater, OK (2310 E Lakeview Rd). Distances offered include:
- 5K
- 10K
- Half Marathon (13.1M)
All runners must register on RunSignup; there is no on-site registration. Registration prices increase on the Monday before the race. A course time limit of 6 hours applies. The event lists finisher medals, a shirt and gear shop, a best costume category, series points, and awards.
Courses and location
The start and event area are at Shelter #3 at Boomer Lake Park, next to the Boomer Park Splash Pad. The Splash Pad is on the west side of the lake; the park address will bring visitors to the east side.
Course layouts are described as out-and-back loops. The 5K and 10K use a 3.11-mile out-and-back: the 5K completes this loop once and the 10K twice. The half marathon and marathon use a 3.28-mile out-and-back: the half marathon repeats it four times and the marathon repeats it eight times. Additional event information and race policies are provided by the organizer. Visit the organization's website for the most recent information.
