Leaky Hourglass Ultra

Halfway, United States • 29 Aug 2026

Event Format

The Leaky Hourglass Ultra is a Last Man Standing running event. Participants run repeated laps of a 4.167-mile out-and-back course. The unique rule is that the time allowed to complete each lap decreases by one minute per lap, starting with 60 minutes for the first lap. The event continues until only one runner finishes a lap within the allotted time.

Course

The course is on a rural highway with a chip and seal surface and features rolling hills. Each lap involves roughly 250 feet of elevation gain. The course is not closed to traffic. Runners must run facing traffic and are required to use a headlamp and flasher after sunset.

Aid Stations

There are two aid stations.

  • Start/Finish: A manned station offering Tailwind Endurance Fuel, water, chips, pickles, candy bars, and various other hot and cold food options.
  • Turnaround Point: An unmanned station with Tailwind Endurance Fuel, water, and prepackaged snacks in a tote.

Logistics

The event is located near Half Way, Missouri, approximately 20 miles north of Springfield. Primitive camping on-site is allowed for Friday and Saturday nights. Packet pickup is available on-site on Friday evening and Saturday morning before the event. Professional race photos are provided free of charge. Visit the organization's website for the most recent information.

Race information

Last Man Standing
Visit the organization's website for the most recent information.
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