The 2013 Tokyo Marathon was the seventh edition of the annual marathon race in Tokyo, Japan and was held on Sunday, 24 February. An IAAF Gold Label Road Race, it was the first World Marathon Majors event to be held that year and represented the first occasion that the Tokyo race was part of the elite-level marathon series.

Dennis Kipruto Kimetto is a Kenyan long distance runner who competes in road running events. He was the world record holder in the men's marathon with a time of 2 hours 2 minutes 57 seconds, a record which he held until Eliud Kipchoge broke it in 2018 with a time of 2:01:39.