Heat 1 | | time | | L | 1. Rushell Clayton | Jamaica | 54.32s | Q | 7 | 2. Fatoumata Binta Diallo | Portugal | 54.75s | Q | 3 | 3. Amalie Iuel | Norway | 54.82s | Q | 5 | 4. Cathelijn Peeters | Netherlands | 54.84s | q | 8 | 5. Naomi Van den Broeck | Belgium | 55.81s | | 9 | 6. Rebecca Sartori | Italy | 55.81s | | 6 | 7. Chayenne da Silva | Brazil | 56.52s | | 4 | -. Kemi Adekoya | Bahrain | DNS | | 2 |
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Heat 2 | | time | | L | 1. Jasmine Jones | United States | 53.60s | Q | 5 | 2. Rogail Joseph | South Africa | 54.46s | Q, PB | 9 | 3. Savannah Sutherland | Canada | 54.80s | Q | 3 | 4. Paulien Couckuyt | Belgium | 54.90s | q, SB | 2 | 5. Gianna Woodruff | Panama | 54.94s | SB | 8 | 6. Ayomide Folorunso | Italy | 55.03s | | 7 | 7. Shana Grebo | France | 56.70s | | 6 | 8. Carolina Krafzik | Germany | 58.49s | | 4 |
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