John Knudson has 3 recorded races from Irvine, California, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-13 | 2025 Life Time Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:31:28 | 570 |
| 2023-07-15 | 2023 Stages Cycling Tahoe Trail Tahoe Trail 100K | Ultra Marathon | 6:04:28 | 210 |
| 2022-07-16 | Tahoe Trail MTB 100k Solo Ride | Ultra Marathon | 7:34:40 | 321 |