Zumbro
April 11th 2026
Theilman, MN
The Zumbro 100 Mile Endurance Run is a six-loop (6 x 16.7 = 100.2 Miles) 100% trail ultramarathon. The Zumbro Endurance Run 100MI trail races take place within the Zumbro River Bottoms Management Unit in Southeastern Minnesota’s Bluff Country – just outside of the tiny village of Theilman, MN.
The Zumbro 50 Mile Endurance Run is a three-loop (3 x 16.7 = 50 Miles) 100% trail ultramarathon.
Additional Distances
This event also has the following sub ultra distances
17 Miles
Results
100 Miles
| Date | Finishers | Top Result (F) | Top Result (M) | Top Result (X) |
|---|---|---|---|---|
| 04/11/26 | 42 | 26:33:59 | 22:07:23 | 26:39:23 |
| 04/11/25 | 42 | 22:47:24 | 19:15:15 | |
| 04/12/24 | 44 | 30:33:49 | 22:12:17 | |
| 04/08/23 | 24 | 29:43:23 | 21:39:41 | |
| 04/08/22 | 31 | 25:19:34 | 22:26:26 | |
| 04/10/20 | Race Cancelled | |||
| 04/12/19 | Race Cancelled | |||
| 04/13/18 | 20 | 30:49:28 | 28:09:14 | |
| 04/07/17 | 48 | 22:34:11 | 19:42:48 | |
| 04/08/16 | 52 | 23:46:36 | 20:43:45 | |
| 04/10/15 | 46 | 24:53:10 | 18:04:00 | |
| 04/11/14 | 26 | 23:21:02 | 20:30:52 | |
| 04/12/13 | 23 | 26:47:20 | 21:46:18 | |
| 04/13/12 | 30 | 30:10:06 | 21:16:04 | |
| 04/08/11 | 16 | 26:13:36 | 21:53:05 | |
| 04/09/10 | 17 | 30:00:44 | 23:21:21 | |
| 04/10/09 | 11 | 28:49:53 | 26:18:21 | |
34 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 04/11/26 | 83 | 5:25:08 | 4:58:24 |
| 04/12/25 | 92 | 5:21:46 | 4:55:44 |
| 04/13/24 | 84 | 5:14:45 | 5:14:09 |
| 04/08/23 | 77 | 6:15:54 | 5:19:57 |
| 04/08/22 | 79 | 5:39:20 | 5:05:40 |
| 04/08/21 | 121 | 6:30:42 | 5:23:55 |
50 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 04/11/26 | 67 | 11:19:05 | 7:56:10 |
| 04/12/25 | 64 | 9:20:50 | 8:39:48 |
| 04/13/24 | 80 | 10:18:36 | 8:38:48 |
| 04/08/23 | 70 | 12:36:30 | 8:57:43 |
| 04/08/22 | 71 | 11:07:08 | 9:28:14 |
| 04/11/20 | Race Cancelled | ||
| 04/13/19 | Race Cancelled | ||
| 04/13/18 | 49 | 10:15:45 | 9:13:44 |
| 04/08/17 | 149 | 10:06:15 | 7:52:41 |
| 04/08/16 | 128 | 10:08:09 | 7:49:36 |
| 04/10/15 | 100 | 10:28:47 | 8:10:45 |
| 04/11/14 | 61 | 10:54:03 | 8:30:08 |
| 04/13/13 | 53 | 14:04:55 | 8:53:44 |
| 04/13/12 | 39 | 9:30:32 | 9:56:39 |
100 KM
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 04/10/09 | 5 | 13:07:47 | 13:51:30 |