All one day race results
All one day race results for Siv Lang Heng.
| # | Season | Race | Class | Result |
|---|---|---|---|---|
| 1 | 2015 | South East Asian Games WE - Road Race | JR | 10 |
| 2 | 2017 | South East Asian Games WE - Road Race | JR | 12 |
| 3 | 2016 | Udon Thani's 123rd Anniversary International Cycling | 1.2 | 19 |