The 2018 Tokyo Marathon (Japanese: 東京マラソン 2018) was the twelfth edition of the annual marathon race in Tokyo and was held on Sunday, 25 February. An IAAF Gold Label Road Race, it was the first World Marathon Majors event to be held that year. The men's race was won by Dickson Chumba in 2:05:30 hours while the women's race was won by Birhane Dibaba in 2:19:51. The men's runner-up Yuta Shitara set a Japanese national record time of 2:06:11 hours. This was also an Asian record. The host nation featured prominently in the men's race, with two runners in the top five and six of the top ten being Japanese. The Japanese women fared less well, with sixth-place being the best national performer (over ten minutes behind the winner).