No Business 100
Where the 2026 race is now
- Registration closed
- Race dayFriday, October 23, 2026
- Results posted2026 results
- Race day
- TBD Date not announced
- Distance
- Ultra Ultramarathon
- Entry
- Unconfirmed Not verified yet
- Boston qualifier
- n/a
- Live tracking
- Not yet Shown here race week
Quick facts
- One loop of just over 100 miles through the Big South Fork, crossing two states.
- About 14,500 feet of climb and 15 aid stations.
- Course direction reverses each year, with a buckle for finishing both ways.
- 34-hour cutoff.
Course
The course is a single loop of just over 100 miles through the Big South Fork National River and Recreation Area, starting in Tennessee and crossing into Kentucky before looping back. It is about 90 percent trail, with roughly 14,500 feet of ascent and 15 aid stations.
The route passes sandstone arches, rockhouses, overlooks, waterfalls and old homesteads on technical single-track. The cutoff is 34 hours in either direction.
About the No Business 100
The No Business 100 is run by Ultranaut Running, a small Knoxville trail organization, and is based at the group camp in Pickett CCC Memorial State Park near Jamestown, Tennessee. The route passes the abandoned No Business settlement.
The course direction reverses every year, and runners who finish both directions earn a special buckle. The race has served as a Western States qualifier.
Past No Business 100 dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Friday, October 23, 2026 | Results available | Open results |
No Business 100 FAQ
When is the No Business 100?
We're waiting for the finalized date for the 2027 No Business 100. The most recent running was on Friday, October 23, 2026.
How do I track a runner in the No Business 100?
Most races publish tracking in race week. Marathon Scout links the official tracker on this page during race week, once the race or its timing provider publishes it.
Where can I find the No Business 100 results?
The 2026 results and earlier years are linked on the No Business 100 results page.
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Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.