Ultra Running Hub St. Louis, MO, United States · Saturday, April 3, 2027
Double Chubb 50k
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
DUV results for the 2026 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, April
Regional 2001-2020 average for April — NASA POWER, grid elevation 153 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 59 | Zack Skovgaard · 04:07:49 | Heidi Williams · 05:36:28 |
| 2025 | 50km | 38 | Zach Boyle · 04:38:08 | Lisa Kennedy · 06:39:53 |
| 2024 | 50km | 41 | Arek Sienica · 04:09:45 | Claire Rogan · 04:51:39 |
| 2023 | 50km | 39 | Jeremy Grither · 04:35:53 | Mary Kronable · 05:39:00 |
| 2022 | 50km | 49 | Zach Boyle · 04:12:22 | Maureen Varty · 05:50:34 |
| 2021 | 50km | 48 | Arek Sienica · 04:18:49 | Jaime Maher · 06:04:33 |
| 2019 | 50km | 55 | Jack Wilkinson · 04:11:47 | Rita Short · 06:05:03 |
| 2018 | 50km | 55 | Jack Wilkinson · 04:03:06 | Rita Short · 05:41:08 |
| 2017 | 50km | 55 | Jack Wilkinson · 03:58:17 | Heidi Williams · 05:11:43 |
| 2016 | 50km | 45 | Hugo Lee · 04:16:59 | Christine Crawford · 05:22:41 |
The field grew 55% between 2025 (38) and 2026 (59). 37% of the 2026 field were women.
DUV results for the 2026 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.
Gear for this race
Chosen for 50 km of trail.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Overview
The Double Chubb 50k, organised by St. Louis Ultrarunners Group, will take place on April 3, 2027, in St. Louis, MO. This trail race, with a 9-hour time limit, has a cut-off tighter than 65% of 50k races. Runners must maintain a pace faster than 10.8 minutes per kilometer to finish within the time limit.
The race has been held 10 times since 2016, with the last edition in 2026 seeing 59 finishers. With a field bigger than 63% of 50k races, but smaller than 36%, it offers a mid-sized experience compared to its peers.
Similar races
Other 50K trail ultras, closest in distance first.