New & experienced runners over 40 who want to keep running for a long time
This 40-year-old can run 100m in less than 10 seconds
This 40-year-old can run 100m in less than 10 seconds
Kim Collins is the only 40-year-old to run a sub-10 second 100m dash. CNN found out the secret to his longevity and his hopes for Rio 2016.
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If only....



