The qualifying heats took place on 7 August, with the 67 athletes involved being split into 9 heats. The first 3 athletes in each heat ( Q ) and the next 5 fastest ( q ) qualified for the quarter-finals.
The quarter-finals took place on 7 August, with the 32 athletes involved being split into 4 heats. The first 4 athletes in each heat ( Q ) qualified for the semifinals.
The semifinals took place on 8 August, with the 16 athletes involved being split into 2 heats. The first 4 athletes in each heat ( Q ) qualified for the final.