Leaky Hourglass Ultra
Halfway, United States • 29 Aug 2026
Leaky Hourglass Ultra
The Leaky Hourglass Ultra is a Last Man Standing running event held in Half Way, Missouri. Participants run repeated 4.167 mile out and back laps. The allowed cutoff begins at 60 minutes for the first lap and decreases by one minute each subsequent lap until only one runner remains able to complete a lap.
The course is a chip and sealed rural highway with rolling hills and roughly 250 feet of elevation gain per lap. The route is not closed to traffic; runners are required to run facing traffic and to carry a headlamp and a flasher after sunset.
There is one manned aid station at the start and finish offering Tailwind Endurance Fuel, water, chips, pickles, candy bars, Scooby snacks, and a variety of hot and cold options. A second, unmanned aid station at the turnaround provides Tailwind Endurance Fuel, water, and prepackaged snacks in a tote for grab and go access.
The event location is listed as 2055 Hwy Z and is about 20 miles north of Springfield, Missouri. Primitive camping on site is allowed for the nights before the event. No refunds will be issued; bib transfers are permitted. Professional race photos will be provided free of charge by Mile 90 Photography. Visit the organization's website for the most recent information.