Femke Bol won in 49.17 seconds and took 0.07 off the record she set two weeks ago at the Dutch championships.
Femke Bol breaks her own 400m world record at indoor worlds
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World Indoor Championships
Femke Bol makes history with indoor 400m world record - Turkiye Newspaper
Femke Bol breaks her 400m world record at World Indoors
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