The O24, a premier 24-hour trail race, invites runners of all experience levels to test their limits amidst the scenic beauty of Lake Metroparks Chapin Forest Reservation in Kirtland, OH, on May 2, 2026. This unique endurance challenge, established in 2012, offers participants the freedom to complete any distance up to 24 hours, fostering an incredible atmosphere for both seasoned ultrarunners and those looking to tackle their first long-distance event.

The USATF certified and IAU Bronze Labeled course is a looped trail, approximately 1.0024 miles in length, featuring rolling terrain with roughly 65 feet of elevation gain and loss per lap. Runners will navigate a surface predominantly composed of crushed limestone and dirt (93%), with a brief section of asphalt (7%), all while enjoying the park's distinctive rock formations and mature woodland trails. Typical race day conditions in early May feature comfortable highs around 65F and lows around 41F, with a 19% chance of precipitation, creating ideal conditions for a prolonged effort.

The O24 is renowned for its supportive environment, where thousands of miles have been conquered and countless personal challenges overcome. A fully stocked main aid station awaits at the start/finish of each loop, offering a variety of sustenance including water, Tailwind Nutrition, sodas, pickle juice, cookies, and more, with hot foods and liquids becoming available from Saturday evening through Sunday afternoon. Runners are encouraged to bring their own hydration systems as it is a cup-free event. Those achieving 100 miles or more will earn a coveted belt buckle, while all finishers covering less than 100 miles receive a custom race medal, ensuring a memorable experience for every participant.