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Incredible, but true. Zatopek was the first to run 10,000 metres in under 29 minutes and 20,000 metres in less than one hour.

From:Sri Chinmoy,Emil Zatopek: Earth's Tearing Cry. Heaven's Beaming Smile, Agni Press, New York, 1980
Sourced from https://srichinmoylibrary.com/ez