Osawatomie, KS, United States · Saturday, September 26, 2026

Fixed Distance 100 mi

Ultrapalooza 100mi

Race completed
161 km Distance
not publishedn/a Climbing
8.1 est Grit · Hardcore

Calculated from 161 km alone — the organiser has not published an elevation profile. Read 8.1 as a floor, not a verdict.

38.4972° N, 94.9505° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~4 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (100mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 27°C
Night low 15°C
Rainfall Showers likely
Daylight 12 h 03 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 302 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 100mi 4 Joe Joyner · 22:42:37 —
2024 100mi 5 Brandon Green · 26:41:16 Melanie Linderer · 30:28:35
2023 100mi 2 Michael Bielik · 21:55:35 —
2022 100mi 3 Daniel Bell · 23:52:22 Melissa Martinez · 28:50:36

The field shrank 20% between 2024 (5) and 2025 (4). 0% of the 2025 field were women.

DUV results for the 2025 edition (100mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
  • nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 161 km of trail.

  • Trail Running Shoes 161 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition Past 161 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Flask capacity for 161 km, without the bounce.
  • Headlamps 161 km almost certainly means running into the night.
  • Accessories Chafe and blisters end more 161 km races than fitness does.
All gear guides →

Similar races

Other 100 mi trail ultras, closest in distance first.