| Answer | Crossword Clue |
|---|---|
| LAP | Length of a 400-meter run |
| LAPPED | Got a 400-meter lead on, say |
| HURDLER | Olympian in a 110- or 400-meter race |
| KRYPTONISOTOPE | The length of a meter is based precisely on the amount of light emitted from this |
| ONEK | Length of a kids' fun run, briefly |
