The competition comprised heats, semifinals, and a final round. The leading five in each heat plus the fastest sixth place advanced to the semifinals. The top two from each of the three semifinals plus the two best third-place times advanced to the "A" final, and competed for medals. The next eight fastest advanced to the "B" final.
The top two from each of the semifinals plus the two best third-place times advanced to the "A" final. The next eight fastest advanced to the "B" final.