The defending Pan American Games champion is Ashley Higginson from United States.

They held that formation for four laps before da Silva slipped back, leaving Lalonde in control on the rail.

The outer position was filled by Marisa Howard with Belén Casetta also getting ahead of da Silva.

Over the final 2 laps, Lalonde put the hammer down and extended her lead to a 2 and a half second victory.

Prior to this competition, the existing world and Pan American Games records were as follows: All times shown are in seconds.