The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1979 Pan American Games took place on 3 July at the Piscina Olimpica Del Escambron.[1] The last Pan American Games champion was the United States.[2][3][4][5][6][7]
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.[8]
All times shown are in minutes and seconds.
The first round was held on July 3.[1]
The final was held on July 3.[1]
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