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139 inches per second is about half as fast as Noah Ngeny
In other words, it's 0.4659 times the speed of Noah Ngeny, and the speed of Noah Ngeny is 2.146 times that amount.
(in Rieti, Italy; 1999) (sprinter; 1978-)
Setting a world record at the Rieti Grand Prix in 1999, Noah Ngeny ran 1,000 m in 2:11.96 for an average speed of 298.30 inches per second. According to some reports, Ngeny did not begin running competitively until just three years before setting the record.
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