World's Fair Ultras

APR

18

2026

World's Fair Ultras offers timed and distance races on a flat, certified loop in downtown Knoxville's World's Fair Park. Choose from 3-hour to 24-hour events, or try the 6-hour ruck division. The event includes community amenities like food trucks and live streaming.

Sat 18 Apr 2026

Knoxville, Tennessee

Website Registration

3 Hour 50k 6 Hour 50 Mile 100k

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World's Fair Ultras

The World's Fair Ultras is a running and rucking event held in Knoxville, Tennessee on April 18, 2026. The event takes place at World's Fair Park on a flat, USATF-certified loop course that is 0.5724 miles long.

Event Distances

3 Hour
6 Hour
12 Hour Day Event
12 Hour Night Event
24 Hour
50K
50 Mile
100K

A separate 6hr Ruck division is also offered. This is an open ruck or weighted vest event. Participants must weigh in before the start. Required minimum weights are listed as 30 lbs for men and 15 lbs for women.

The course is in downtown Knoxville, within walking distance of hotels. There is a central aid station, and space is provided for personal aid setups. The event features food trucks, coffee, ice cream, and music. The race will be livestreamed on YouTube. Finishers of 100 miles in the 24-hour event receive a custom belt buckle. Ruck finishers receive a patch. Visit the organization's website for the most recent information.

24 hr

24 Hour

12 hr

12 Hr Day Event

100 km

100k

80 km

50 Mile

6 hr

6 Hour

50 km

50k