The 15 competitors first raced in two heats on July 28.

The 24 competitors first raced in three heats on September 5.

The 19 competitors first raced in three heats on 20 October.

The 18 competitors first raced in three heats on July 28.

The 13 competitors first raced in two heats on October 22.

The 19 competitors first raced in three heats on July 29.

The 15 competitors first raced in two heats on September 5.

The 18 competitors first raced in three heats on September 26.

The 21 competitors first raced in three heats on July 30.

The 21 competitors first raced in three heats on July 31 though one did not start.