Swimming at the 2011 Pan American Games – Men's 400 metre freestyle
The men's 400 metre freestyle competition of the swimming events at the 2011 Pan American Games took place on the 15 of October at the Scotiabank Aquatics Center. The defending Pan American Games champion is Matt Patton of the United States.
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 American Games records were as follows:| World record | 3:40.07 | Rome, Italy | July 26, 2009 | |
| Pan American Games record | 3:49.77 | Rio de Janeiro, Brazil | July 18, 2007 |
Qualification
Each National Olympic Committee was able to enter up to two entrants providing they had met the A standard in the qualifying period. NOCs were also permitted to enter one athlete providing they had met the B standard in the same qualifying period.Results
All times shown are in minutes.| KEY: | q | Fastest non-qualifiers | Q | Qualified | NR | National record | PB | Personal best | SB | Seasonal best |
Heats
The first round was held on October 15.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 4 | Matt Patton | 3:54.70 | QA | |
| 2 | 1 | 5 | Cristian Quintero | 3:56.67 | QA | |
| 3 | 1 | 2 | Martin Naidich | 3:56.81 | QA | |
| 4 | 1 | 3 | Alejandro Gómez | 3:57.18 | QA | |
| 5 | 2 | 4 | Charlie Houchin | 3:57.98 | QA | |
| 6 | 2 | 5 | Juan Martin Pereyra | 3:58.10 | QA | |
| 7 | 2 | 3 | Lucas Kanieski | 3:58.30 | QA | |
| 8 | 2 | 6 | Arturo Perez Vertti | 3:58.60 | QA | |
| 9 | 1 | 7 | Daniel Delgadillo | 4:00.60 | QB | |
| 10 | 2 | 2 | Francis Despond | 4:01.88 | QB | |
| 11 | 1 | 6 | Giuliano Rocco | 4:04.25 | QB | |
| 12 | 2 | 7 | Raul Martinez | 4:05.05 | QB | |
| 13 | 2 | 1 | Sebastian Jahnsen | 4:13.73 | QB | |
| 14 | 1 | 1 | Allan Gutierrez | 4:20.17 | QB |
Final
The final will be held on October 15.Final B
| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | Francis Despond | 4:00.16 | ||
| 2 | 3 | Giuliano Rocco | 4:00.61 | ||
| 3 | 4 | Daniel Delgadillo | 4:00.81 | ||
| 4 | 6 | Raul Martinez | 4:04.25 | ||
| 5 | 2 | Sebastian Jahnsen | 4:05.56 | ||
| 6 | 7 | Allan Gutierrez | 4:19.71 |
Final A
The final was held on October 15.| Rank | Lane | Name | Nationality | Time | Notes |
| 2 | Charlie Houchin | 3:50.95 | |||
| 4 | Matth Patton | 3:51.25 | |||
| 5 | Cristian Quintero | 3:52.51 | |||
| 4 | 7 | Juan Martin Pereyra | 3:52.71 | ||
| 5 | 1 | Lucas Kanieski | 3:56.26 | ||
| 6 | 6 | Alejandro Gómez | 3:56.28 | ||
| 7 | 3 | Martin Naidich | 3:56.77 | ||
| 8 | 8 | Arturo Perez Vertti | 3:58.33 |