Fox's Hourglass Ultra
About this race
Welcome to the Fox’s Hourglass Ultra, a relentless test of mental grit, pacing, and pure endurance. There is no finish line in sight, no set distance, and no guaranteed end. There is only the top of the hour, the sounding of the whistle, and the next loop. We will follow the standard backyard ultra format with the exception of the time limit. Fox's Hourglass Ultra is a max of 24 hours. The event continues until only ONE runner remains, max of 24 hours. If there are multiple participants for the final 24th hour, the winner will be determined based on who completes the final lap first.
Fox's Hourglass Ultra is a 24-hour event where participants run a 4.167 mile marked loop on the hour every hour. Each loop begins exactly one hour after the last. If the participant is not in the starting corral for the initial start, the participant is disqualified and receives a “Did Not Finish” (DNF). Each participant must complete the loop and be back at the starting corral within the hour in order to continue. If a participant fails to start or finish a loop within the allotted hour, the participant is out of the race and receives a DNF. Note, the event can end prior to the 24th hour.
Pick your distance
Trail running
Fox's Hourglass Ultra
Race-day daylight
We have no recorded weather for Suamico yet, but sunrise and sunset follow from the venue and the date.
The sun rises at 6:59 AM and sets at 6:18 PM local time (CDT) in Suamico on October 9, 2027 — 11h 18m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 2 Suamico events
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