A quick summary of this weekend's major action. Click any for detailed results and coverage.
Suguru Osako (Team Nissin Shokuhin) set a 13:28.00 indoor 5000 m national record at the Millrose Games in New York.
Charles Ndirangu (Kenya/Team JFE Steel) ran a 1:00:18 debut to break the National Corporate Half Marathon course record. Masato Kikuchi (Team Konica Minolta) tied the 20 km Japanese national record of 57:24 but missed the half marathon NR by 7 seconds as he took 3rd in 1:00:32. Michi Numata (Team Toyota Jidoshokki) won the women's half marathon in 1:09:27, while Yuika Mori (Team Yamada Denki) won the 10 km in a course record 32:26.
Yuki Kawauchi (Saitama Pref. Gov't) ran 2:15:06 to win the Kochi Ryoma Marathon a week after running 2:15:16 in Nobeoka, his first time tackling back-to-back marathons. Kawauchi set new world records with 35 career sub-2:16 marathons and 37 sub-2:17s.
Collegiates Shin Kimura (Meiji Univ.) and Saori Noda (Osaka Gakuin Univ.) won the Kumanichi 30 km Road Race, Noda's 1:45:00 the fastest-ever by a Japanese collegiate woman. Hayato Sonoda (Team Kurosaki Harima) and Chigusa Yoshimatsu (Kumamoto T&F Assoc.) won the accompanying marathon, Yoshimatsu taking over 2 minutes off the course record in 2:49:29.
Ultramarathoner Kiyokatsu Hasegawa (Team JR Higashi Nihon) won the Ome 30 km Road Race in 1:33:06, American Nick Arciniaga more than a minute back in 5th. Megumi Amako (Canon AC Kyushu) easily won the women's race in 1:46:52.