Gregory Thein has 3 recorded races from Fremont, California, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-04-12 | Schneider Electric Marathon de Paris 2026 — Marathon de Paris | Marathon | 4:15:20 | 31994 |
| 2025-09-28 | 2025 Life Time Chicago Half Marathon + 5K | Half Marathon | 1:48:48 | 986 |