Answer: falsestart

AnswerCrossword Clue
FALSESTARTLeaving early?
FALSESTARTF
FALSESTARTRace infraction
FALSESTARTSprinter's error
FALSESTARTReason for a track delay
FALSESTARTRunning too quickly?
FALSESTARTPutting 7:00 on the invite, but not actually getting home until 7:30?
FALSESTARTGun jumper's infraction
FALSESTARTReason to go back to the block