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A Celebration of Human Potential
World’s Fair Ultras – April 18, 2026
Downtown Knoxville, Tennessee | Certified Loop Course | Experience Worlds Fair Park and the history
3 Hour • 6 Hour • 6 Hour Ruck 12 Hour Day or Night • 24 Hour • 50K • 50 Mile • 100K
You’re built for more. You feel it when you run, when you dig deep, when you push past limits others never dare to test. But too often, races feel impersonal—like you’re just another bib number on a forgettable course.
You’ve trained, you’ve sacrificed, and you’re looking for something worthy of your effort. A course that honors what you’ve put in. A community that sees your drive. A race that feels like a celebration of the human spirit, not just a finish line.
World Fair Ultras is more than a race.
It’s a celebration of human potential—a festival of grit, tenacity, and community, held on a fast, flat, and officially USATF-certified loop in the heart of downtown Knoxville.
Whether you’re chasing your first ultra finish or gunning for 100 miles, this is your moment.
RACE DETAILS
⚡ Categories: 3 Hour • 6 Hour • 6 Hour Ruck • 12 Hour Day or Night • 24 Hour • 50K • 50 Mile • 100K
🏆 100 Mile Finishers in the 24 Hour event will receive a Custom Worlds Fair Ultra Belt Buckle
📍 Course: USATF Certified 0.5724-mile loop at World’s Fair Park
🎥 Livestream on YouTube: Real-time race coverage as the race unfolds, runner interviews, on-course tracking updates as records are broken.
💪 Support: Central aid station + space for personal aid setups
🛌 Stay: Walk straight from your hotel to the course
🎉 Perks: Food trucks, coffee, ice cream, music, community
🏃This is the perfect course to set a new PR or set a new Tennessee state running record
WHO IT’S FOR
Everyone. Whether you’re a seasoned ultra vet, a first-timer, or somewhere in between—you belong here. We welcome all backgrounds, paces, and playlists.
THE SPIRIT OF THE RACE
This isn’t just about miles—it’s about meaning.
We ask only two things from our runners:
- Be kind.
- Give it your all.
Respect the human potential within yourself and in every runner out there. This is a shared journey—and when we pour our hearts into it, we rise together.
SIGN UP. SHOW UP. GO ALL IN.
Register now and take your place in a one-of-a-kind celebration of endurance, community, and what it means to be fully alive.
**If you are a race director please message us before signing up as we have a special discount for you for being awesome.
Ruck
We are thrilled to host a ruck division for the 6hr race. For the uninitiated, rucking is typically described as walking/hiking with a weighted pack. The activity gets its name from “rucksacks,” which is military-speak for “backpack.”
Men - 30lb dry
Female -15lb dry
Boys under 15 - 20lbs
Girls under 15 -10lbs
We are excited to say each finisher will receive a patch once your race is officially over or you've tapped out.
You must weigh-in. To make this administratively simple-no weigh-in = no finishers patch.
Subject to weight check at anytime.
You must also relay to RDs or event staff when you are officially ending your race!
Please plan to weigh in 30 minutes to 1 hr prior to the event start.
Weight must be in the form of a steel ruck plate, weight vest blocks, bumper plates,(sand weight is accepted)or other items which have the weight clearly stamped. Removal of plates or reduction of weight during the event is not authorized. Honor system applies. Do the right thing.
Event's current local time: 7:05 PM ET
