16 | RUN FOR YOUR LIFE
Above : Rain-soaked participants in the Rome Marathon in March on cobblestones stepped upon by the crumpled sandals of gladiators in the past . runromethemarathon . com
Greenland ’ s UNESCO-accredited Ilulissat Icefjord glitters under late-afternoon sunlight , as witnessed by participants in the Icefjord Midnight Marathon in June . icefjord-midnight-marathon . com
PHOTOGRAPHS DAVID TARPEY , MIHAI STETCU / RED BULL CONTENT POOL , COURTESY OF RACE ORGANISERS