Heat 4 | | time | gap | L | Y | Rk | 50m | 1. Suzanne Carol Baumer | Australia | 57.76s | +2.23s | - | 22 | 22. | 27.97s | 2. Adriana Pereira | Brazil | 58.53s | +3.00s | - | 24 | 34. | 28.39s | 3. Karen Dieffenthaller | Trinidad Tob | 58.64s | +3.11s | - | 20 | 35. | 28.03s | 4. Patricia Kohlmann | Mexico | 59.05s | +3.52s | - | 20 | 36. | 28.22s | 5. Isabele Vieira | Brazil | 59.15s | +3.62s | - | 16 | 37. | 28.86s | 6. Maria Soledad Rivera | Mexico | 59.32s | +3.79s | - | 21 | 38. | 28.30s | 7. Bryndis Ollafsdottir | Iceland | 59.56s | +4.03s | - | 19 | 40. | 28.92s | 8. Sze Ki Celeste Hung | Hong Kong | 1:00.18 | +4.65s | - | 16 | 42. | 28.99s |
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Heat 3 | | time | gap | L | Y | Rk | 50m | 1. Gillian Akiko Thomson | Philippines | 59.41s | +3.88s | - | 13 | 39. | 28.62s | 2. Carolina Mauri | Costa Rica | 1:00.14 | +4.61s | - | 18 | 41. | 28.45s | 3. Eun-Jung Kim | South Korea | 1:00.39 | +4.86s | - | 15 | 43. | 29.59s | 4. Ana Fortin | Honduras | 1:01.11 | +5.58s | - | 16 | 44. | 29.52s | 5. Fenella Ng | Hong Kong | 1:01.27 | +5.74s | - | 20 | 45. | 29.75s | 5. Young-Hee Han | South Korea | 1:01.72 | +6.19s | - | 15 | 46. | 29.92s | 6. Wang Chi | Taiwan | 1:01.72 | +6.19s | - | 18 | 46. | 29.90s | 8. Elsa Freire Vicente | Angola | 1:05.47 | +9.94s | - | 14 | 55. | 30.62s |
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