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What was more impressive than Robert Bannister’s 4-minute mile record? 03:01

It was 23 days later when Diane Leather broke the record for running a mile under 5 minutes by running a mile in 4 minutes and 59.6 seconds. Unlike Bannister's race, there was no video footage to capture Leather's race. When she retired, she had a personal best of 4 minutes and 43 seconds.

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