Ninja 5K, 10K, & 13.1M at Stillwater, OK (31)

Prepare to embrace your inner warrior at the Ninja 5K, 10K, & 13.1M, hitting the scenic trails of Stillwater, Oklahoma, on August 1, 2026! This exciting event, part of the US Road Running Race Series, offers participants a unique opportunity to challenge themselves across three popular distances. Runners will navigate an out-and-back course around picturesque Boomer Lake Park, with the 5K completing one loop, the 10K tackling two, and half marathoners conquering four laps of the 3.28-mile route. The start and finish lines are conveniently located at Shelter #3, adjacent to the Boomer Park Splash Pad on the lake's west side, so be sure to head to the correct location for packet pickup, which begins 30 minutes before the 8:00 AM race start.

While specific elevation details are not provided, the park setting typically offers a runnable, enjoyable course, making it suitable for both seasoned runners and those looking to achieve a new personal best. Embrace the "Ninja" theme by donning your best costume for a chance to win an award, and all finishers will be rewarded with a commemorative medal. Typical race day conditions in early August in Stillwater feature warm weather, with highs around 94°F and lows around 72°F, and a relatively low 11% chance of precipitation. Be sure to register online as there is no on-site registration for this event.