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World's Fair Ultras

Knoxville, United States • 18 Apr 2026

The World's Fair Ultras, held in downtown Knoxville, Tennessee, is a unique ultrarunning event celebrating human potential and community spirit. Set on a USATF-certified 0.55-mile flat loop at World's Fair Park, the race offers multiple distances including 3-hour, 6-hour, 12-hour (day and night), 24-hour, 50K, 50-mile, and 100K events. The course is fast and spectator-friendly, with central aid stations and space for personal aid setups. Participants enjoy perks like food trucks, coffee, ice cream, and live music. The event welcomes runners of all levels, emphasizing kindness and giving full effort in a supportive atmosphere. Visit the organization's website for the most recent information.

United States Tennessee Knoxville

Race information

Website Registration
24 km
24 Hour
12 km
12 Hour Night Event
12 km
12 Hour Day Event
100 km
100k Event
50 mi
50 Mile Event
6 km
6 Hour
50 km
50k Event
3 km
3 Hour
Visit the organization's website for the most recent information.
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