For them, a marathon is often the first time they have run 26.2 miles, and they suffer the consequences. What it means to break 2 hoursThe fastest time recorded for a marathon is two hours, two minutes, and 57 seconds. Kenya's Dennis Kimetto sets the current marathon world record at Berlin in 2014. JUST WATCHED Attempting to run a marathon in under 2 hours Replay More Videos ... MUST WATCH Attempting to run a marathon in under 2 hours 02:53Three runners were selected by Nike to help break the record. It will likely come down to how much they want it -- how much they want to run a marathon faster than anyone before them.

Source: CNN April 17, 2017 08:26 UTC