World's Fair Ultras

APR

18

2026

Run a USATF-certified flat loop in downtown Knoxville's World's Fair Park. Choose from multiple timed and distance ultra events, or try the weighted ruck division. The event features community amenities like food trucks and music.

Sat 18 Apr 2026

Knoxville, Tennessee

Website Registration

3 Hour 50k Event 6 Hour Ruck 6 Hour 50 Mile Event

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Event Details

The World's Fair Ultras is an ultramarathon event scheduled for Saturday, April 18, 2026. The race takes place in downtown Knoxville, Tennessee, at World's Fair Park. The course is a USATF-certified loop that is 0.5724 miles long.

Race Categories

The event features multiple timed and distance-based categories. Participants can choose from:

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

A Ruck division is offered within the 6-hour event. This is an open division for participants wearing a weighted rucksack or vest. Specific weight requirements are set for men, women, and participants under 15. A finisher's patch is awarded, contingent on a pre-race weigh-in.

Course and Amenities

The certified loop course is described as flat. The event provides a central aid station and allows space for personal aid setups. The location in downtown Knoxville offers walkable access from nearby hotels. Event amenities include food trucks, coffee, ice cream, and music. Visit the organization's website for the most recent information.

24 hr

24 Hour

12 hr

12 Hour Day or Night

100 km

100k Event

50 mi

50 Mile Event

6 hr

6 Hour Ruck

6 hr

6 Hour