http://theconversation.com/can-eliud-kipchoge-run-a-sub-2hr-marathon-it-all-comes-down-to-15-extraordinary-seconds-124981
Tim Mottau
flipped into everyday running.
http://theconversation.com/can-eliud-kipchoge-run-a-sub-2hr-marathon-it-all-comes-down-to-15-extraordinary-seconds-124981