The defending Pan American Games champion is Melissa Bishop from the Canada.

From the beginning of the final, Rose Mary Almanza asserted herself, hitting the break line first and pushing out to the front of the tight pack.

For most of the first lap, Sade Sealy sat immediately on Almanza's outer shoulder until the first pass down the home straight, when Natoya Goule moved forward into the outer position, briefly poking into the lead at the bell.

50 metres to go, Almanza's face began to show strain, Goule gained the advantage and went on for the win.

Fighting as she tied up, Almanza strained to hold off the fast closing Rodríguez, making one last jerk to get her torso over the finish line .02 ahead to retain silver Prior to this competition, the existing world and Pan American Games records were as follows: