Fastest run 400 metres (female) (indoors)

According to Official Guinness Records,

The fastest indoor 400 m run by a female athlete is 49.59 seconds, by Jarmila Kratochvílová (Czechoslovakia) at the European Indoor Championships in Milan, Italy, on 7 March 1982.As of January 2018, this was the longest-standing IAAF track record by any athlete, indoor or outdoor.

For a complete list of 1982 records, please visit 1982 Guinness Records in Italy.

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