Rangsam Inthachai participated in the 200 m at the Asian Championships 1979, unable to advance from her heat. In 1984 she was a member of the Thai Olympic 4×100 m team.
Personal Best: 100 – unknown.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1984 Summer Olympics | Athletics |  THA |
Rangsam Intharachai | |||
| 4 × 100 metres Relay, Men (Olympic) | Thailand | 8 h1 r2/3 |
