Ultra Running Hub Custer, SD, United States · Saturday, July 31, 2027
Lean Horse Ultra-Marathon 30 Mile
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, August
Regional 2001-2020 average for August — NASA POWER, grid elevation 1592 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 30mi | 57 | Gage Winkler · 04:25:06 | Theresa Lewis · 05:24:02 |
| 2025 | 30mi | 57 | Tim Fryer · 03:47:10 | Tess Kieselhorst · 04:36:16 |
| 2024 | 30mi | 41 | Andrew Trapp · 03:59:32 | Kendra Eerdmans · 04:44:29 |
| 2023 | 30mi | 41 | Austin Freeburg · 04:53:46 | Kristi Haase · 05:42:06 |
| 2022 | 30mi | 29 | Kobe Berger · 04:54:54 | Jessica Kirkpatrick · 06:35:29 |
| 2021 | 30mi | 38 | Andrew Hermiston · 04:39:50 | Claire Todd · 04:56:03 |
| 2019 | 30mi | 54 | Nathan Amery · 04:12:13 | Hannah Billings · 04:22:07 |
| 2018 | 30mi | 40 | Tim Fryer · 03:45:11 | Brenda Jacobs · 05:33:12 |
| 2017 | 50km | 48 | Sam Killian · 04:15:33 | Candace Wallin-Richter · 04:43:07 |
| 2016 | 50km | 31 | William McGinnis · 03:53:57 | Erika Winchester · 04:54:33 |
The field has held steady: 57 in 2025, 57 in 2026. 53% 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.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 48 km of trail with 800 m of ascent.
- 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.
- Headlamps A 12 h limit puts you out there after dark.
- GPS Watches Battery life first — a 48 km day outlasts most full-GPS modes.
Overview
The Lean Horse Ultra-Marathon 30 Mile, a trail race in Custer, SD, covers 48 kilometers with 800 meters of elevation gain, making for a climb of 16.7 meters per kilometer. This 50k event has a field size larger than 63% of its 2664 peers.
Runners have 12 hours to complete the course, translating to a 15 minutes per kilometer cutoff pace. This is a more generous cutoff than 21% of 1022 peer 50k races. The course is an out-and-back on the George S. Mickelson Trail, utilizing a former railroad line and bike path within Black Hills National Forest.
Similar races
Other 50K trail ultras, closest in distance first.