Swimming at the 2011 Pan American Games – Men's 400 metre individual medley
# Swimming at the 2011 Pan American Games – Men's 400 metre individual medley

The men's 400 metre individual medley 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 Thiago Pereira of Brazil.

This race consisted of eight lengths of the pool. The first two lengths were swum using the butterfly stroke, the second pair with the backstroke, the third pair of lengths in breaststroke, and the final two were freestyle.

## Records

Prior to this competition, the existing world and Pan American Games records were as follows:

| World record | Michael Phelps (USA) | 4:03.84 | Beijing, China | August 10, 2008 |
| - | - | - | - | - |
| Pan American Games record | Thiago Pereira (BRA) | 4:11.14 | Rio de Janeiro, Brazil | July 17, 2007 |

## Qualification

Each National Olympic Committee (NOC) was able to enter up to two entrants providing they had met the A standard (4:34.2) in the qualifying period (January 1, 2010 to September 4, 2011). NOCs were also permitted to enter one athlete providing they had met the B standard (4:41.5) 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 | 2 | 5 | Conor Dwyer | United States | 4:24.98 | QA |
| 2 | 2 | 4 | Thiago Pereira | Brazil | 4:26.27 | QA |
| 3 | 1 | 4 | Robert Margalis | United States | 4:29.70 | QA |
| 4 | 2 | 3 | Esteban Enderica | Ecuador | 4:31.15 | QA |
| 5 | 2 | 6 | Ezequiel Trujillo | Mexico | 4:31.31 | QA |
| 6 | 1 | 6 | Esteban Paz | Argentina | 4:34.08 | QA |
| 7 | 1 | 5 | Diogo Yabe | Brazil | 4:34.18 | QA |
| 8 | 1 | 3 | Liam Dias | Canada | 4:37.60 | QA |
| 9 | 1 | 2 | Eddy Marin | Venezuela | 4:38.88 | QB |
| 10 | 2 | 2 | Diego Castillo | Panama | 4:45.31 | QB |
| 11 | 2 | 7 | Joel Romeu | Uruguay | 4:53.76 | QB |

### B Final

The B final was also held on October 15.

| Rank | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 9 | 5 | Diego Castillo | Panama | 4:40.04 | |
| 10 | 4 | Eddy Marin | Venezuela | 4:40.08 | |

### A Final

The A final was held on October 15.

| Rank | Lane | Name | Nationality | Time |
| - | - | - | - | - |
| | 5 | Thiago Pereira | Brazil | 4:16.68 |
| | 4 | Conor Dwyer | United States | 4:18.22 |
| | 3 | Robert Margalis | United States | 4:24.88 |
| 4 | 6 | Esteban Enderica | Ecuador | 4:26.43 |
| 5 | 2 | Ezequiel Trujillo | Mexico | 4:30.02 |
| 6 | 8 | Liam Dias | Canada | 4:34.11 |
| 7 | 1 | Diogo Yabe | Brazil | 4:35.66 |
| 8 | 7 | Esteban Paz | Argentina | 4:37.67 |
