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World's Fair Ultras

Knoxville, United States • 18 Apr 2026

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.

United States Tennessee Knoxville

Race information

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