Ultrapalooza

September 26th 2026
Osawatomie, KS
50 KM | 50 Miles | 100 KM | 100 Miles

Midwest Endurance brings you Ultrapalooza! It’s the flattest, awesome-est, running-est party in the Midwest! The trail crosses the beautiful Flint Hills. The Flint Hills represent one of the last remaining tallgrass prairie ecosystems in the world. The eastern portions of the route travels alongside the Marais Des Cygnes River, between rushing waters and towering bluffs, through rolling farmland and riparian woodlands. The Flint Hills Trail is the seventh-longest rail-trail in America, and the longest trail in Kansas. It follows the general route of the Santa Fe National Historic Trail and forms a component of the coast-to-coast American Discovery Trail. Cool, huh?

The course will be an out and back consisting of single track trail, old railroad beds and towpath trail. It is home to abundant prairie plant and wildlife species, spectacular views, national historic sites, and a diverse set of recreational areas. It is flat, crushed gravel course. Don't worry, you won’t get lost. The course is mostly straight, staffed well, and marked the best.

Upcoming Races

Sep 26 2026
50 KM
450 450 ft.
Out and Back
12:00 Cutoff
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface
Sep 26 2026
50 Miles
750 750 ft.
Out and Back
30:00 Cutoff
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface
Sep 26 2026
100 KM
1,200 1,200 ft.
Out and Back
30:00 Cutoff
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface
Sep 26 2026
100 Miles
1,500 1,500 ft.
Out and Back
30:00 Cutoff
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface

Additional Distances

This event also has the following sub ultra distances

26.2 Miles 10 KM 13.1 Miles 5 KM

Results

Date Finishers Top Result (F) Top Result (M)
09/27/25 4 22:42:37
09/21/24 5 30:28:35 26:41:16
09/23/23 2 21:55:35
09/03/22 3 28:50:36 23:52:22
Date Finishers Top Result (F) Top Result (M)
09/27/25 4 10:58:42
09/21/24 1 13:09:31
09/23/23 6 14:08:08 13:30:18
09/03/22 7 19:27:04 11:32:01
Date Finishers Top Result (F) Top Result (M)
09/27/25 12 10:43:46 7:39:46
09/21/24 8 12:43:00 9:28:28
09/23/23 5 8:34:09 6:55:15
09/03/22 12 7:15:29 8:43:14
Date Finishers Top Result (F) Top Result (M)
09/27/25 16 4:23:49 4:40:13
09/21/24 33 5:27:36 4:54:32
09/23/23 28 5:09:48 4:50:19
09/03/22 24 4:32:34 3:54:14

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A roundup of the week's content and most recent race results. Sent once a week on Thursday.

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