Running the race Track and field

oscar pistorius, running in first round of 400 m @ 2012 olympics

for sprinting events (bar 4 × 400 m relay , indoor 400 metres), each athlete must run race within allocated lane start finish. if athlete leaves lane or steps on line demarking each lane athlete disqualified. lane rules apply initial periods of other track races, example, beginning of 800 m. similar rules apply longer distance races when large field of athletes present , separate starting points designated, field merging 1 group shortly after starting phase.

any athlete jostles or obstructs athlete, in way impedes progress, should disqualified event. however, if athlete pushed or forced person run outside lane, , if no material advantage gained, athlete should not disqualified.