2019.early yesterday morning    challenge    chemical company    corporate sponsorship    danube river    different cities    different courses    distance’s michael jordan    eliud kipchoge    extensive level of support    fastest possible route    fastest time    finish line    first marathoner    formidable distance    heart of the sport    hours    ideal 26.2-mile course    journalist ed caesar    kelly clarkson    kenenisa bekele    kipchoge’s run    legendary ethiopian distance runner    marathon    marathon distance    marathon.one hour    mile of his run    mobile marathon spa treatment    moon landing    much-hyped nike campaign    new abilities    new time    official marathon conditions    olympic gold medal    only professional marathon competition    own disco-like laser    own world record    pain of distance    parts of the road    relative ease    rotating phalanx of pacesetters    running’s original moon landing    scientist yannis pitsiladis    strict definition    sub-four-minute mile    time trial    two-hour    two-hour barrier    unique challenges    world record