Midwest Endurance Ultrapalooza

SEP
26-27
2026
Ultrapalooza in Osawatomie, Kansas offers distances from 5K to 100 miles on the flat, crushed-gravel Flint Hills Trail, with manned and unmanned aid stations, drop bag support, and pacer options for the longest races.
26-27 Sep 2026
100 miles 100 kilometers 50 miles 50 kilometers 26 miles 13 miles 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Midwest Endurance Ultrapalooza - Osawatomie, Kansas

Midwest Endurance Ultrapalooza is a multi-distance running event held September 26-27, 2026 at the Mile 0 Flint Hills trailhead in Osawatomie, Kansas. Distances offered include:

  • 100 Miler
  • 100K
  • 50 Miler
  • 50K
  • Marathon
  • 1/2 Marathon
  • 10K
  • 5K

The course is an out-and-back that uses single-track trail, old railroad beds and towpath trail segments and is described as flat, crushed gravel. The route travels through the Flint Hills tallgrass prairie and along the Marais Des Cygnes River, passing bluffs, farmland and riparian woodlands. The Flint Hills Trail follows the general route of the Santa Fe National Historic Trail and is part of the American Discovery Trail.

Aid support includes a mix of manned and unmanned stations. Manned stations are stocked with water, Hammer nutrition products, snack foods, sandwiches, chips, candy and gels; unmanned stations provide water only. The event states aid stations are spaced no more than 6.0 miles apart.

Rules and services: pacers are permitted for the 100 Miler, 100K and 50 Miler with distance-based entry restrictions and required pacer bibs and waivers. There is a drop bag system with one bag allowed per manned aid station; bags must be clearly labeled. Runners must submit a completed Medical Information Sheet at packet pickup. The race has a no-refund, no-transfer policy; race entry deferral to the following year is allowed with minimum advance notice to race management. Visit the organization's website for the most recent information.

100 mi
100 Miler
100 km
100k
50 mi
50 Miler
50 km
50k
26 mi
Marathon
13 mi
1/2 Marathon
10 km
10k
5 km
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.