400 m, Men
| Competition | 2018 Asian Junior Athletics Championships |
|---|---|
| Venue |
Gifu
 JPN
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Aruna Dharshana |  SRI |
45.79 | ||
| 🥈 | Pasindu Kodikara | SRI |
46.96 | ||
| 🥉 | Syuji Mori | JPN |
47.08 |
| Competition | 2018 Asian Junior Athletics Championships |
|---|---|
| Venue |
Gifu
JPN
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Aruna Dharshana | SRI |
45.79 | ||
| 🥈 | Pasindu Kodikara | SRI |
46.96 | ||
| 🥉 | Syuji Mori | JPN |
47.08 |