Gary Jantzen has 2 recorded races from GILBERT, Arizona, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-02-15 | 2026 Lost Dutchman Marathon, Half Marathon, 10K and 8K | Half Marathon | 2:47:19 | 541 |
| 2025-11-22 | Gilbert Half Marathon, 10K & 5K | Half Marathon | 2:48:54 | 620 |