| Final | time | | L | | 1. Yuliya Yefimova | Russia | 29.81s | | 4 | | 2. Imogen Clark | Great Britain | 30.34s | | 5 | | 3. Arianna Castiglioni | Italy | 30.41s | | 6 | | 4. Rūta Meilutytė | Lithuania | 30.46s | | 3 | | 5. Ida Hulkko | Finland | 31.02s | | 2 | | 6. Martina Carraro | Italy | 31.11s | | 1 | | 7. Natalia Ivaneeva | Russia | 31.11s | | 7 | | 8. Sophie Hansson | Sweden | 31.23s | | 8 |
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| Venue: Tollcross International Swimming Centre | | Qualification time: |
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| World record: Lilly King, United States | 29.40s | Budapest (HUN), 25 July 2017 | | European record: Rūta Meilutytė, Lithuania | 29.48s | Barcelona (ESP), 3 August 2013 | | Championship record: Rūta Meilutytė, Lithuania | 29.88s | Berlin (GER), 23 August 2014 |
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| | | Wednesday 8th August 17:25. |
| Semi 1 | time | | L | Rk. | | 1. Rūta Meilutytė | Lithuania | 30.38s | Q | 3 | 3. | | 2. Arianna Castiglioni | Italy | 30.40s | Q | 4 | 4. | | 3. Natalia Ivaneeva | Russia | 30.56s | q | 5 | 6. | | 4. Martina Carraro | Italy | 30.70s | q | 6 | 7. | | 5. Anna Sztankovics | Hungary | 31.34s | | 7 | 11. | | 6. Mona McSharry | Ireland | 31.45s | | 2 | 12. | | 7. Tatiana Chișca | Moldova | 31.51s | | 1 | 13. | | 8. Rikke Møller Pedersen | Denmark | 31.70s | | 8 | 16. | | Semi 1 | time | | L | Rk. | | 1. Yuliya Yefimova | Russia | 29.66s | Q, CR | 4 | 1. | | 2. Imogen Clark | Great Britain | 30.04s | Q | 5 | 2. | | 3. Ida Hulkko | Finland | 30.53s | q | 7 | 5. | | 4. Sophie Hansson | Sweden | 30.72s | q | 6 | 8. | | 5. Sarah Vasey | Great Britain | 31.02s | | 3 | 9. | | 6. Jenna Laukkanen | Finland | 31.18s | | 2 | 10. | | 7. Matilde Schrøder | Denmark | 31.55s | | 1 | 14. | | 8. Fanny Lecluyse | Belgium | 31.57s | | 8 | 15. |
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| | | Wednesday 8th August 09:51 |
| Ranking | time | | Ht | L | | 1. Yuliya Yefimova | Russia | 30.20s | Q | 5 | 4 | | 2. Arianna Castiglioni | Italy | 30.30s | Q | 5 | 5 | | 3. Imogen Clark | Great Britain | 30.40s | Q | 3 | 4 | | 4. Natalia Ivaneeva | Russia | 30.60s | Q | 3 | 5 | | 5. Rūta Meilutytė | Lithuania | 30.73s | Q | 4 | 4 | | 5. Sarah Vasey | Great Britain | 30.73s | Q | 4 | 5 | | 7. Sophie Hansson | Sweden | 30.79s | Q | 3 | 6 | | 8. Martina Carraro | Italy | 30.87s | Q | 3 | 3 | | 9. Jenna Laukkanen | Finland | 31.03s | Q | 4 | 3 | | 10.Mona McSharry | Ireland | 31.09s | Q | 5 | 6 | | 11.Ida Hulkko | Finland | 31.11s | Q | 5 | 3 | | 12.Anna Sztankovics | Hungary | 31.15s | Q | 5 | 2 | | 13.Veera Kivirinta | Finland | 31.26s | | 4 | 6 | | 14.Matilde Schrøder | Denmark | 31.32s | Q | 4 | 7 | | 15.Tatiana Chișca | Moldova | 31.40s | Q | 4 | 8 | | 16.Fanny Lecluyse | Belgium | 31.43s | Q | 5 | 7 | | 17.Rikke Møller Pedersen | Denmark | 31.44s | Q | 3 | 7 | | eliminated in Heats | | 18.Jessica Eriksson | Sweden | 31.77s | | 3 | 8 | | 19.Fanny Deberghes | France | 31.80s | | 5 | 8 | | 20.Jessica Vall | Spain | 31.86s | | 4 | 2 | | 21.Maria Romanjuk | Estonia | 32.00s | | 3 | 9 | | 22.Kotryna Teterevkova | Lithuania | 32.01s | | 5 | 9 | | 23.Viktoriya Zeynep Güneş | Turkey | 32.05s | | 2 | 6 | | 24.Weronika Hallmann | Poland | 32.08s | | 5 | 1 | | 25.Elena Guttmann | Austria | 32.11s | | 2 | 5 | | 25.Tes Schouten | Netherlands | 32.11s | | 3 | 2 | | 27.Anna Wermuth | Denmark | 32.26s | | 2 | 7 | | 28.Susann Bjørnsen | Norway | 32.30s | | 3 | 1 | | 29.Alina Zmushka | Belarus | 32.32s | | 4 | 1 | | 30.Petra Chocová | Czechia | 32.35s | | 5 | 0 | | 31.Lisa Mamie | Switzerland | 32.48s | | 2 | 3 | | 31.Cornelia Pammer | Austria | 32.48s | | 1 | 3 | | 33.Tina Čelik | Slovenia | 32.65s | | 4 | 0 | | 34.Tjaša Vozel | Slovenia | 32.70s | | 2 | 4 | | 35.Vitalina Simonova | Russia | 32.77s | | 4 | 9 | | 36.Alina Bulmag | Moldova | 32.80s | | 2 | 8 | | 37.Sara Staudinger | Switzerland | 32.89s | | 1 | 4 | | 38.Nikoleta Trníková | Slovakia | 32.98s | | 1 | 5 | | 39.Maria Harutjunjan | Estonia | 33.04s | | 2 | 1 | | 40.Nikoletta Pavlopoulou | Greece | 33.08s | | 2 | 2 | | 41.Andrea Podmaníková | Slovakia | 33.32s | | 3 | 0 | | 42.Stina Colleou | Norway | 33.62s | | 2 | 9 | | 43.Thea Blomsterberg | Denmark | 33.74s | | 2 | 0 |
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