Ultra Running Hub DeWitt, IL, United States · Saturday, March 27, 2027
Clinton Lake Ultra
Calculated from 48 km alone — the organiser has not published an elevation profile. Read 2.4 as a floor, not a verdict.
What the course asks
DUV results for the 2026 edition (30mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, March
Regional 2001-2020 average for March — NASA POWER, grid elevation 237 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 30mi | 37 | Dustin Parrish · 03:56:09 | Renee White · 05:13:44 |
| 2025 | 30mi | 45 | Ramses Armendariz · 04:31:49 | Jen Gravley · 05:35:36 |
| 2024 | 30mi | 34 | Steven Immen · 05:00:26 | Renee White · 05:07:03 |
| 2023 | 30mi | 40 | Trevor Giampa · 04:30:50 | Renee White · 05:35:53 |
| 2022 | 30mi | 38 | Tom Rauen · 04:23:43 | Christine Crawford · 05:52:47 |
| 2021 | 30mi | 89 | Ryan Kappner · 04:37:25 | Mary Toohill · 05:23:46 |
| 2019 | 30mi | 81 | Mark Holcomb · 03:59:51 | Elizabeth Riffel-Altman · 05:02:14 |
| 2018 | 30mi | 48 | Mark Holcomb · 04:43:49 | Sarka Petrickova · 05:18:27 |
| 2017 | 30mi | 83 | Mark Holcomb · 04:26:30 | Christine Crawford · 04:54:55 |
| 2016 | 30mi | 89 | Justin Stewart · 03:33:37 | Patricia Schaefer · 04:43:12 |
The field shrank 18% between 2025 (45) and 2026 (37). 24% of the 2026 field were women.
DUV results for the 2026 edition (30mi) — 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.
Gear for this race
Chosen for 48 km of trail.
- Trail Running Shoes 48 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 48 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 48 km, without the bounce.
- GPS Watches Battery life first — a 48 km day outlasts most full-GPS modes.
Overview
The Clinton Lake Ultra in DeWitt, IL, is a 48km trail race held in March. It is a fixed-distance event with an entry fee between US$65 and US$85. The race has been held 10 times since 2016, with the most recent edition in 2026 having 37 finishers.
Runners face a cut-off tighter than 78% of 50k races, allowing 8 hours to complete the course, which translates to a 10 minutes per kilometer pace. This leaves less margin than 22% of other 50k events. The course involves three loops of a 10-mile trail through forest, hills, and meadows, primarily single-track with a small road and bridge section.
With a field size bigger than 49% of 50k fields but smaller than 50% of its 2762 peers, this race offers a middle-sized field compared to other 50k events.
Similar races
Other 50K trail ultras, closest in distance first.