| Girls' 100 metre butterfly at the 2014 Summer Youth Olympics |
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| Venue | Nanjing Olympic Sports Centre | |||||||||
| Dates | August 21, 2014 (heats & semifinals) August 22, 2014 (final) |
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| Competitors | 30 | |||||||||
| Winning time | 57.67 | |||||||||
| Medalists | ||||||||||
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The girls' 100 metre butterfly event in swimming at the 2014 Summer Youth Olympics took place on 21-22 August at the Nanjing Olympic Sports Centre in Nanjing, China.
The heats were held at 10:23.
The semifinals were held at 18:11.
The final was held at 18:09.