World's Fair Ultras

The World's Fair Ultras, debuting on April 18, 2026, is an ultra running event held in downtown Knoxville, Tennessee. Featuring a USATF-certified 0.89-mile flat loop course at World's Fair Park, the race offers 3, 6, 12, and 24-hour timed categories, welcoming runners of all levels from first-timers to seasoned ultramarathoners. Participants aiming for 100 miles receive a custom belt buckle.

The event emphasizes community, grit, and human potential, with central and personal aid stations, nearby hotel access, and amenities like food trucks, coffee, ice cream, and music. It celebrates endurance and camaraderie in a vibrant, supportive atmosphere. Visit the organization's website for the most recent information.