| Final 20:46 | time | gap | L | React. | 50m | | 1. Felipe França Da Silva |  BRA | 59.21s | PR | 4 | 0.86 | 31.80s | 1. | | 2. Felipe Lima | BRA | 1:00.01 | 0.80 | 3 | 0.68 | 32.22s | 2. | | 3. Richard Funk |  CAN | 1:00.29 | 1.08 | 6 | 0.66 | 31.90s | 5. | | 4. Jorge Murillo |  COL | 1:00.61 | 1.40 | 5 | 0.71 | 31.68s | 6. | | 5. Brad Craig |  USA | 1:01.34 | 2.13 | 2 | 0.68 | 33.07s | 4. | | 6. Miguel De Lara |  MEX | 1:01.42 | 2.21 | 1 | 0.78 | 32.36s | 7. | | 7. BJ Johnson | USA | 1:01.77 | 2.56 | 7 | 0.66 | 32.66s | 8. | | 8. Edgar Crespo |  PAN | 1:01.88 | 2.67 | 8 | 0.64 | 33.71s | 3. |
| World Record: Adam Peaty (GBR) 57.92s, London (GBR), 17.04.2015. | | Pan American Games Record: Mark Gangloff (USA) 1:00.24, Rio de Janeiro (BRA), 17.07.2007. | | Qualification times. Standard A: 1:02.79, Standard B: 1:06.56 |
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| Final B 20:41 | time | gap | L | React. | 50m | | 9. Carlos Claverie |  VEN | 1:02.46 | | 4 | 0.84 | 33.22s | 2. | | 10.Dustin Tynes |  BAH | 1:02.49 | 0.03 | 3 | 0.69 | 33.94s | 1. | | 11.James Dergousoff | CAN | 1:02.57 | 0.11 | 6 | 0.71 | 32.98s | 4. | | 12.Facundo Miguelena |  ARG | 1:03.55 | 1.09 | 5 | 0.69 | 34.06s | 3. | | 13.Julian Fletcher |  BER | 1:03.60 | 1.14 | 7 | 0.76 | 33.73s | 5. | | 14.Jordy Groters |  ARU | 1:03.97 | 1.51 | 1 | 0.66 | 33.96s | 6. | | 15.Renato Prono |  PAR | 1:04.57 | 2.11 | 2 | 0.70 | 34.24s | 8. | | 16.Martin Melconian |  URU | 1:04.95 | 2.49 | 8 | 0.78 | 34.85s | 7. |
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Heats - Friday 17.07 11:22 | | First 8 to Final. Next 8 to Final B. |
| Ranking | time | gap | L | React. | 50m | Heat | | 1. Felipe França Da Silva | BRA | 59.84s | PR | 4 | 0.81 | 32.45s | 1. | Heat 2 | | 2. Jorge Murillo | COL | 1:00.53 | 0.69 | 3 | 0.76 | 31.95s | 2. | Heat 3 | | 3. Felipe Lima | BRA | 1:00.57 | 0.73 | 4 | 0.78 | 32.32s | 1. | Heat 3 | | 4. Richard Funk | CAN | 1:00.80 | 0.96 | 4 | 0.67 | 31.93s | 4. | Heat 1 | | 5. Brad Craig | USA | 1:01.29 | 1.45 | 5 | 0.65 | 32.48s | 3. | Heat 3 | | 6. BJ Johnson | USA | 1:01.61 | 1.77 | 5 | 0.66 | 32.69s | 3. | Heat 2 | | 7. Miguel De Lara | MEX | 1:01.85 | 2.01 | 3 | 0.79 | 33.03s | 3. | Heat 1 | | 8. Edgar Crespo | PAN | 1:02.01 | 2.17 | 6 | 0.63 | 33.52s | 2. | Heat 2 | | to Final B | | 9. Carlos Claverie | VEN | 1:02.02 | 2.18 | 5 | 0.74 | 33.25s | 1. | Heat 1 | | 10.Facundo Miguelena | ARG | 1:03.03 | 3.19 | 6 | 0.80 | 33.80s | 4. | Heat 3 | | 11.Dustin Tynes | BAH | 1:03.15 | 3.31 | 2 | 0.72 | 33.98s | 5. | Heat 2 | | 12.James Dergousoff | CAN | 1:03.28 | 3.44 | 3 | 0.77 | 34.12s | 4. | Heat 2 | | 13.Renato Prono | PAR | 1:03.75 | 3.91 | 6 | 0.65 | 34.98s | 1. | Heat 1 | | 14.Julian Fletcher | BER | 1:03.87 | 4.03 | 2 | 0.75 | 34.14s | 5. | Heat 1 | | 15.Jordy Groters | ARU | 1:03.92 | 4.08 | 7 | 0.68 | 34.19s | 5. | Heat 3 | | 16.Martin Melconian | URU | 1:04.26 | 4.42 | 2 | 0.78 | 34.25s | 6. | Heat 3 | | eliminated | | 17.Rafael Alfaro |  ESA | 1:05.50 | 5.66 | 7 | 0.74 | 34.73s | 6. | Heat 1 | | 18.Gerardo Huidobro |  PER | 1:08.27 | 8.43 | 7 | 0.62 | 37.73s | 6. | Heat 2 | | 19.Corey Ollivierre |  GRN | 1:10.96 | 11.12 | 1 | 0.68 | 39.16s | 7. | Heat 3 | | 20.Nikolas Sylvester |  VIN | 1:11.94 | 12.10 | 1 | 0.68 | 39.52s | 7. | Heat 2 |
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| Swimmer | Q. time | Birth | | Felipe Lima | BRA | 59.78s | 05 APR 1985 | | Felipe França Da Silva | BRA | 59.82s | 14 MAY 1987 | | Richard Funk | CAN | 1:00.36 | 22 NOV 1992 | | Brad Craig | USA | 1:00.82 | 10 JAN 1989 | | Bj Johnson | USA | 1:01.12 | 20 APR 1987 | | Carlos Claverie | VEN | 1:01.56 | 19 SEP 1996 | | Jorge Murillo | COL | 1:01.90 | 07 SEP 1991 | | James Dergousoff | CAN | 1:02.21 | 28 OCT 1996 | | Miguel De Lara | MEX | 1:02.36 | 09 AUG 1994 | | Facundo Miguelena | ARG | 1:02.41 | 05 AUG 1991 | | Edgar Crespo | PAN | 1:02.45 | 11 MAY 1989 | | Renato Prono | PAR | 1:02.48 | 02 MAR 1991 | | Standard A: 1:02.79 | | Martin Melconian | URU | 1:02.80 | 02 JAN 1990 | | Dustin Tynes | BAH | 1:02.97 | 07 MAR 1996 | | Julian Fletcher | BER | 1:03.86 | 08 OCT 1990 | | Jordy Groters | ARU | 1:03.93 | 03 JUL 1996 | | Gerardo Huidobro | PER | 1:05.72 | 28 JUN 1996 | | Rafael Alfaro | ESA | 1:06.09 | 04 FEB 1992 | | Standard B: 1:06.56 | | Corey Ollivierre | GRN | 1:09.21 | 16 MAR 1997 | | Nikolas Sylvester | VIN | 1:11.65 | 20 JAN 2000 |
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