简介：Aftersixmonthsofscientificallyadvancedtraining,threeoftheworld'smostelitedistancerunnerssetouttobreakthetwo-hourmarathonbarrier.Thesepioneersgoonaglobaltrektodefytheunthinkableandbreakthetwo-hourfeat,fromtestinginwindtunnelsandrunningqiwan.cclabsintheUnitedStates,tobalancingtrainingwiththeirday-to-daylivesineasternAfrica,tothefinalheart-poundingraceinItaly.…