Mason Durham has 4 recorded races from Southern California.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2023-11-18 | 2023 REVEL Big Bear Half Marathon | Half Marathon | 1:54:01 | 493 |
| 2023-09-09 | 2022 REVEL Big Cottonwood Half Marathon | Half Marathon | 2:02:17 | 1283 |
| 2023-04-01 | 2022 REVEL Mt Charleston Half Marathon | Half Marathon | 2:13:04 | 690 |
| 2022-09-10 | 2022 REVEL Big Cottonwood Half Marathon | Half Marathon | 2:00:07 | 1168 |