Mt. Si Relay & Trail Runs
The Half Marathon, Marathon, 50K and 50M are run on the scenic Snoqualmie Valley Trail with the Marathon, 50K and 50M continuing to run east on the John Wayne Pioneer Trail. The trail is old railroad grade with a gentle climb from North Bend to Rattlesnake Lake.
Additional Distances
This event also has the following sub ultra distances
26.2 Miles
13.1 Miles
Results
50 Miles
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/04/25 | 21 | 8:36:06 | 7:58:53 |
| 04/21/24 | 21 | 9:05:09 | 7:39:04 |
| 04/23/23 | 24 | 7:59:03 | 6:17:28 |
| 04/24/22 | 25 | 7:41:47 | 7:13:46 |
| 04/26/20 | Race Cancelled | ||
| 04/28/19 | 21 | 8:18:56 | 7:37:07 |
| 04/29/18 | 30 | 8:15:33 | 6:37:13 |
| 04/23/17 | 29 | 7:31:22 | 6:49:35 |
| 04/24/16 | 29 | 7:46:01 | 7:05:05 |
| 04/26/15 | 68 | 8:22:10 | 6:10:30 |
| 04/27/14 | 41 | 9:01:19 | 6:54:11 |
| 04/28/13 | 36 | 6:33:37 | 6:41:37 |
| 04/22/12 | 39 | 8:47:28 | 7:10:33 |
| 04/10/11 | 43 | 7:14:07 | 7:09:13 |
| 04/11/10 | 46 | 7:34:40 | 5:54:15 |
| 04/19/09 | 48 | 7:09:12 | 6:17:10 |
| 04/13/08 | 50 | 7:56:47 | 6:39:05 |
| 04/22/07 | 54 | 7:39:37 | 6:09:07 |
| 04/23/06 | 48 | 7:20:35 | 6:18:05 |
| 04/17/05 | 38 | 7:11:02 | 6:31:25 |
| 04/14/04 | 37 | 6:55:13 | 6:29:34 |
| 04/27/03 | 27 | 7:15:47 | 6:04:00 |
| 04/14/02 | 24 | 7:49:42 | 6:56:42 |
| 04/08/01 | 26 | 8:41:11 | 5:54:37 |
| 04/11/99 | 22 | 8:10:03 | 6:52:35 |
50 KM
| Date | Finishers | Top Result (F) | Top Result (M) |
|---|---|---|---|
| 05/04/25 | 22 | 4:39:55 | 3:16:31 |
| 04/21/24 | 40 | 5:01:07 | 4:20:13 |
| 04/23/23 | 38 | 4:07:34 | 3:34:34 |
| 04/24/22 | 41 | 4:43:59 | 4:16:45 |
| 04/26/20 | Race Cancelled | ||
| 04/28/19 | 57 | 4:39:42 | 3:37:48 |
| 04/29/18 | 64 | 3:57:55 | 3:41:07 |
| 04/23/17 | 59 | 4:42:48 | 3:50:42 |
| 04/24/16 | 45 | 4:29:04 | 3:53:26 |
| 04/26/15 | 87 | 4:29:02 | 3:58:50 |
| 04/27/14 | 72 | 4:28:06 | 3:42:45 |
| 04/28/13 | 61 | 3:54:53 | 3:41:48 |
| 04/22/12 | 64 | 3:57:13 | 3:36:08 |
| 04/10/11 | 79 | 4:37:12 | 3:45:05 |
| 04/11/10 | 64 | 3:59:05 | 3:28:37 |
| 04/19/09 | 66 | 4:10:18 | 4:00:45 |
| 04/13/08 | 56 | 3:53:09 | 3:52:30 |
| 04/22/07 | 54 | 4:16:05 | 3:39:10 |
| 04/23/06 | 49 | 4:10:15 | 3:46:30 |
| 04/17/05 | 41 | 4:33:47 | 3:19:12 |
| 04/14/04 | 29 | 4:47:28 | 3:27:03 |
| 04/27/03 | 25 | 4:56:12 | 4:00:50 |