DatesOctober 15 (preliminaries and finals) LocationScotiabank Aquatics Center VenueScotiabank Aquatics Center
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 2011 Pan American Games will take place on the 15 of October at the Scotiabank Aquatics Center. The defending Pan American Games champion is the United States (Samantha Woodward, Julia Smit, Emily Kukors and Maritza Correia).
This race consisted of eight lengths of the pool. Each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block.
Records
Prior to this competition, the existing world and Pan American Games records were as follows: