Ultra Running Hub Osawatomie, KS, United States · Saturday, September 26, 2026
Fixed Distance 100K
Ultrapalooza 100km
Race completed
100 km Distance
not publishedn/a Climbing
5.0 est Grit · Challenging
Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.
What the course asks
Field size ~16 Tiny. You will run alone for most of it.
DUV results for the 2025 edition (50km) — 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 | 50km | 16 | Zachary Collins · 04:40:13 | Angela Smith · 04:23:49 |
| 2025 | 50mi | 12 | Mike Osterholt · 07:39:46 | Mindy Haas · 10:43:46 |
| 2025 | 100km | 4 | Aaron Frey · 10:58:42 | — |
| 2024 | 50km | 33 | Benjamin Sundling · 04:54:32 | Ella Reusser · 05:27:36 |
| 2024 | 50mi | 8 | Luis Elias · 09:28:28 | Eva Casale · 12:43:00 |
| 2024 | 100km | 1 | Chris Nicholson · 13:09:31 | — |
| 2023 | 50km | 28 | Chris Nicholson · 04:50:19 | Kalina Emaus · 05:09:48 |
| 2023 | 100km | 7 | Scott Reed · 13:30:18 | Melissa Sharp · 14:08:08 |
| 2023 | 50mi | 5 | Randy Taylor · 06:55:15 | Tiffany Clements · 08:34:09 |
| 2022 | 50km | 24 | Randy Taylor · 03:54:14 | Lina Davis · 04:32:34 |
44% of the 2025 field were women.
DUV results for the 2025 edition (50km) — 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 100 km of trail.
- Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
- Hydration Vests Flask capacity for 100 km, without the bounce.
- Headlamps 100 km almost certainly means running into the night.
- Accessories Chafe and blisters end more 100 km races than fitness does.
Similar races
Other 100K trail ultras, closest in distance first.