J. Ma has 4 recorded races from Belvedere Tiburon, CA, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-10-10 | Bel Aire students 1 Mile | 1 Mile | 10:00 | 103 |
| 2024-10-09 | Reed 1st and 2nd grade students 1 Mile | 1 Mile | 10:42 | 100 |
| 2023-10-11 | Reed School students 1 Mile | 1 Mile | 11:52 | 113 |
| 2022-10-12 | Reed School students 1 Mile | 1 Mile | 11:55 | 98 |