|  Final 20:32 | time | gap | L | React. | 50m | 100m | 150m |  | 1. Hilary Caldwell |  CAN | 2:08.22 | PR | 5 | 0.61 | 31.12s 3. | 1:03.09s | 1. | 1:35.52 | 1. |  | 2. Dominique Bouchard |  CAN | 2:09.74 | 1.52 | 4 | 0.69 | 31.28s 4. | 1:03.57s | 2. | 1:36.32 | 2. |  | 3. Clara Smiddy |  USA | 2:11.47 | 3.25 | 3 | 0.66 | 31.06s 2. | 1:04.36s | 4. | 1:37.53 | 3. |  | 4. Kylie Stewart |  USA | 2:11.92 | 3.70 | 6 | 0.83 | 31.04s 1. | 1:03.89s | 3. | 1:37.95 | 4. |  | 5. Joanna Maranhao |  BRA | 2:12.05 | 3.83 | 2 | 0.70 | 31.75s 6. | 1:05.00s | 5. | 1:38.68 | 5. |  | 6. Gisela Morales |  GUA | 2:13.18 | 4.96 | 7 | 0.68 | 32.43s 8. | 1:06.93s | 7. | 1:39.97 | 7. |  | 7. Andrea Berrino |  ARG | 2:14.38 | 6.16 | 1 | 0.65 | 31.63s 5. | 1:05.30s | 6. | 1:39.42 | 6. |  | 8. Maria Gonzalez |  MEX | 2:16.79 | 8.57 | 8 | 0.66 | 32.08s 7. | 1:07.57s | 8. | 1:42.95 | 8. |   
| World Record: Melissa Franklin (USA) 2:04.06, London (GBR), 03.08.2012. |  | Pan American Games Record: Elizabeth Pelton (USA) 2:08.99, Guadalajara (MEX), 20.10.2011. |  | Qualification times. Standard A: 2:20.19, Standard B: 2:28.60. |   
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| Final B 20:25 | time | gap | L | React. | 50m | 100m | 150m |  | 9. Carolina Colorado |  COL | 2:14.87 |   | 5 | 0.72 | 31.26s 1. | 1:05.02s | 1. | 1:39.24 | 1. |  | 10.Estela Davis |  MEX | 2:16.61 | 1.74 | 4 | 0.62 | 31.39s 2. | 1:06.44s | 3. | 1:42.23 | 4. |  | 11.Mckenna De Bever |  PER | 2:16.76 | 1.89 | 1 | 0.66 | 31.93s 4. | 1:06.87s | 4. | 1:42.14 | 3. |  | 12.Florencia Perotti |  ARG | 2:17.55 | 2.68 | 3 | 0.70 | 31.86s 3. | 1:06.29s | 2. | 1:41.83 | 2. |  | 13.Carla Gonzalez |  VEN | 2:18.77 | 3.90 | 7 | 0.60 | 32.14s 6. | 1:07.03s | 5. | 1:42.76 | 5. |  | 14.Karen Vilorio |  HON | 2:19.42 | 4.55 | 6 | 0.63 | 31.95s 5. | 1:07.13s | 7. | 1:43.58 | 6. |  | 15.Luiza Vieira |  BRA | 2:21.17 | 6.30 | 2 | 0.65 | 32.25s 7. | 1:07.12s | 6. | 1:43.76 | 7. |  | 16.Ines Remersaro |  URU | 2:21.33 | 6.46 | 8 | 0.65 | 32.69s 8. | 1:07.91s | 8. | 1:44.44 | 8. |   
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  Heats - Wednesday 15.07 11:00 |  | First 8 to Final. Next 8 to Final B.  |   
| Ranking | time | gap | L | React. | 50m | 100m | 150m | .Heat |  | 1. Dominique Bouchard |  CAN | 2:09.59 |   | 4 | 0.72 | 32.11s | 3. | 1:04.48 | 3. | 1:37.00 | 1. | Heat 2 |  | 2. Hilary Caldwell |  CAN | 2:10.15 | 0.56 | 4 | 0.61 | 31.53s | 3. | 1:04.29 | 1. | 1:37.30 | 1. | Heat 3 |  | 3. Clara Smiddy |  USA | 2:11.94 | 2.35 | 5 | 0.64 | 31.23s | 2. | 1:04.17 | 1. | 1:38.01 | 2. | Heat 2 |  | 4. Kylie Stewart |  USA | 2:12.30 | 2.71 | 4 | 0.82 | 30.90s | 2. | 1:04.36 | 1. | 1:38.58 | 2. | Heat 1 |  | 5. Joanna Maranhao |  BRA | 2:12.35 | 2.76 | 5 | 0.72 | 31.82s | 4. | 1:04.96 | 2. | 1:38.88 | 2. | Heat 3 |  | 6. Gisela Morales |  GUA | 2:12.38 | 2.79 | 6 | 0.75 | 31.80s | 4. | 1:05.31 | 3. | 1:38.56 | 1. | Heat 1 |  | 7. Andrea Berrino |  ARG | 2:13.62 | 4.03 | 3 | 0.68 | 31.27s | 1. | 1:05.02 | 3. | 1:39.31 | 3. | Heat 3 |  | 8. Maria Gonzalez |  MEX | 2:14.28 | 4.69 | 5 | 0.66 | 30.73s | 1. | 1:04.63 | 2. | 1:39.79 | 3. | Heat 1 |  |  to Final B |  | 9. Estela Davis |  MEX | 2:16.49 | 6.90 | 6 | 0.59 | 31.47s | 2. | 1:05.95 | 4. | 1:41.48 | 4. | Heat 3 |  | 10.Carolina Colorado |  COL | 2:16.52 | 6.93 | 3 | 0.71 | 31.02s | 1. | 1:04.31 | 2. | 1:39.55 | 3. | Heat 2 |  | 11.Florencia Perotti |  ARG | 2:17.63 | 8.04 | 3 | 0.71 | 32.27s | 5. | 1:06.99 | 5. | 1:42.14 | 4. | Heat 1 |  | 12.Karen Vilorio |  HON | 2:18.45 | 8.86 | 7 | 0.64 | 32.45s | 6. | 1:07.17 | 5. | 1:42.50 | 5. | Heat 3 |  | 13.Luiza Vieira |  BRA | 2:20.08 | 10.49 | 6 | 0.64 | 33.71s | 5. | 1:08.97 | 5. | 1:44.07 | 4. | Heat 2 |  | 14.Carla Gonzalez |  VEN | 2:20.25 | 10.66 | 2 | 0.59 | 31.69s | 3. | 1:05.98 | 4. | 1:42.63 | 5. | Heat 1 |  | 15.Mckenna De Bever |  PER | 2:20.67 | 11.08 | 2 | 0.67 | 32.36s | 5. | 1:07.78 | 6. | 1:44.12 | 6. | Heat 3 |  | 16.Ines Remersaro |  URU | 2:21.33 | 11.74 | 2 | 0.66 | 33.20s | 4. | 1:08.44 | 4. | 1:44.69 | 5. | Heat 2 |  |  eliminated |  | 17.Lara Butler |  CAY | 2:26.43 | 16.84 | 7 | 0.74 | 33.78s | 6. | 1:10.86 | 6. | 1:48.65 | 6. | Heat 2 |   
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| Swimmer | Q. time | Birth |  | Hilary Caldwell |  CAN | 2:08.55 | 13 MAR 1991 |  | Dominique Bouchard |  CAN | 2:08.99 | 29 MAY 1991 |  | Kylie Stewart |  USA | 2:11.18 | 27 MAR 1996 |  | Joanna Maranhao |  BRA | 2:12.47 | 29 APR 1987 |  | Clara Smiddy |  USA | 2:12.53 | 04 JAN 1996 |  | Maria Gonzalez |  MEX | 2:13.37 | 25 APR 1990 |  | Andrea Berrino |  ARG | 2:13.39 | 14 FEB 1994 |  | Carolina Colorado |  COL | 2:13.67 | 07 SEP 1987 |  | Florencia Perotti |  ARG | 2:16.67 | 24 SEP 1992 |  | Estela Davis |  MEX | 2:16.86 | 28 OCT 1994 |  | Luiza Vieira |  BRA | 2:16.99 | 27 MAR 1992 |  | Gisela Morales |  GUA | 2:17.73 | 17 DEC 1987 |  | Mckenna De Bever |  PER | 2:18.67 | 05 JUN 1996 |  | Ines Remersaro |  URU | 2:20.05 | 02 DEC 1992 |  | Carla Gonzalez |  VEN | 2:20.15 | 17 DEC 1997 |  |  Standard A: 2:20.19 |  | Karen Vilorio |  HON | 2:21.19 | 27 MAY 1993 |  | Lara Butler |  CAY | 2:25.16 | 02 OCT 1994 |  |  Standard B: 2:28.60 |   
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