Swimming at the 2014 South American Games – Women's 400 metre freestyle

The women's 400 metre freestyle competition at the 2014 South American Games took place on March 7 at the Estadio Nacional. The last champion was Joanna Maranhão of Brazil.

This race consisted of eight lengths of the pool, with all eight being in the freestyle stroke.

Records
Prior to this competition, the existing world and Pan Pacific records were as follows:

Results
All times are in minutes and seconds.

Heats
The first round was held on March 7, at 11:40.

Final
The final was held on March 7, at 19:10.