Lean Horse
August 15th 2025
Custer, SD
50 KM |
50 Miles |
100 Miles
The Lean Horse 100 is considered to be one of the best first time ultra's in the country because of the great running surface and gentle elevation changes. There are many things that have changed at the Lean Horse 100 over the years. But one thing that does not change is the "small town" feel of the race. The crew at Lean Horse wants to make sure that your ultra is the race that you will never forget.
For more than ten years, the Lean Horse 100 has inspired runners of all abilities and from all walks of life, from all over the country and world to come to South Dakota to test themselves over the 20 Mile, 30 Mile, 50 mile, 100 mile, and 5 Person Relay distances.
For more information regarding the race and the course please visit us at our webpage.
Upcoming Races
Aug 16 2025
50 KM
1,700
1,700
ft.
Out and Back
10:00 Cutoff
2
Elevation Rating
Rolling, ~2500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Aug 16 2025
50 Miles
2,659
2,659
ft.
Out and Back
16:00 Cutoff
2
Elevation Rating
Rolling, ~2500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Aug 15 2025
100 Miles
5,887
5,887
ft.
Out and Back
30:00 Cutoff
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Results
50 Miles
| Date | Finishers | Top Result (M) | Top Result (F) |
|---|---|---|---|
| 08/17/24 | 53 | 7:18:32 | 8:08:04 |
| 08/20/23 | 64 | 7:35:01 | 8:10:04 |
| 08/20/22 | 41 | 7:52:05 | 6:23:27 |
| 08/14/21 | 34 | 7:16:58 | 10:01:23 |
| 08/16/20 | Race Cancelled | ||
| 08/16/19 | 60 | 6:12:30 | 8:25:20 |
| 08/19/18 | 42 | 6:58:40 | 7:50:19 |
| 08/18/17 | 52 | 6:52:15 | 7:26:43 |
| 08/27/16 | 49 | 6:58:49 | 7:21:05 |
| 08/22/15 | 45 | 6:03:33 | 8:36:16 |
| 08/23/14 | 28 | 7:46:54 | 8:22:20 |
| 08/24/13 | 46 | 6:55:42 | 7:07:02 |
| 08/25/12 | 46 | 7:09:45 | 7:19:10 |
| 08/27/11 | 31 | 7:00:39 | 6:51:32 |
| 08/28/10 | 51 | 7:05:50 | 7:25:59 |
| 08/22/09 | 58 | 8:42:30 | 7:26:46 |
| 08/23/08 | 42 | 6:06:10 | 8:38:49 |
| 08/27/07 | 41 | 6:53:00 | 8:47:00 |
| 08/26/06 | 40 | 7:59:20 | 8:29:13 |
| 08/27/05 | 49 | 7:35:08 | 8:32:30 |
50 KM
| Date | Finishers | Top Result (M) | Top Result (F) |
|---|---|---|---|
| 08/17/24 | 41 | 3:59:32 | 4:44:29 |
| 08/20/23 | 39 | 5:23 | 5:42:06 |
| 08/20/22 | 29 | 4:54:54 | 6:35:29 |
| 08/14/21 | 38 | 4:39:50 | 4:56:03 |
| 08/16/20 | Race Cancelled | ||
| 08/16/19 | 53 | 4:12:12 | 4:22:06 |
| 08/19/18 | 40 | 3:45:10 | 5:33:11 |
| 08/18/17 | 48 | 4:15:33 | 4:43:07 |
| 08/27/16 | 31 | 3:53:57 | 4:54:33 |
| 08/22/15 | 29 | 3:39:11 | 5:44:45 |
| 08/23/14 | 28 | 4:08:37 | 5:35:57 |
| 08/24/13 | 29 | 3:41:00 | 3:43:50 |
| 08/25/12 | 27 | 3:54:35 | 4:41:54 |
| 08/27/11 | 17 | 5:11:16 | 4:50:39 |
| 08/28/10 | 23 | 4:31:47 | 5:41:52 |
| 08/22/09 | 19 | 5:21:37 | 6:01:09 |
| 08/27/07 | 21 | 4:38:00 | 4:56:00 |
| 08/26/06 | 32 | 4:35:11 | 4:19:20 |
| 08/27/05 | 19 | 5:13:38 | 6:32:22 |
100 Miles
| Date | Finishers | Top Result (M) | Top Result (F) |
|---|---|---|---|
| 08/16/24 | 49 | 18:05:00 | 20:47:31 |
| 08/19/23 | 57 | 18:34:01 | 21:38:47 |
| 08/20/22 | 54 | 16:19:41 | 18:06:47 |
| 08/14/21 | 53 | 17:59:39 | 18:50:38 |
| 08/15/20 | Race Cancelled | ||
| 08/16/19 | 47 | 17:16:48 | 21:19:32 |
| 08/19/18 | 44 | 17:51:29 | 19:03:16 |
| 08/18/17 | 51 | 16:44:53 | 22:46:55 |
| 08/27/16 | 44 | 18:20:45 | 23:04:08 |
| 08/22/15 | 44 | 18:55:13 | 18:13:06 |
| 08/23/14 | 39 | 18:33:07 | 22:51:40 |
| 08/24/13 | 43 | 15:59:53 | 23:37:20 |
| 08/25/12 | 73 | 15:14:15 | 20:29:24 |
| 08/27/11 | 77 | 15:34:12 | 20:30:01 |
| 08/28/10 | 95 | 15:25:00 | 22:00:05 |
| 08/22/09 | 73 | 16:47:31 | 21:10:17 |
| 08/23/08 | 83 | 15:40:33 | 16:55:30 |
| 08/27/07 | 66 | 15:24:00 | 20:42:00 |
| 08/26/06 | 51 | 17:38:30 | 22:36:10 |
| 08/27/05 | 59 | 17:38:34 | 20:51:54 |
