The Sgt. Bret D. Isenhower Memorial 5K is an annual event held in Seminole, Oklahoma, to honor the memory of Sergeant Bret D. Isenhower, who was killed in action in Afghanistan on September 9, 2011. The event features a 5K run and a 1-mile fun run, with all proceeds supporting the Sgt. Bret D. Isenhower Memorial Scholarship. We hope you will join us on May 16, 2026!