2022 100 km World Championships gold medalist Haruki Okayama (Comodi Iida) and club runner Akiko Maruichi (GRlab) took the top spots in the Shibamata 100 km ultramarathon in Tokyo, Saitama and Ibaraki. The men's race was set up as an aggressive shot at the first-ever sub-6-hour time, with three pacers leading a group including Okayama, '22 silver medalist Jumpei Yamaguchi (Eldoreso), 5th-placer Guillaume Ruel (France), sub-2:10 marathoner Jo Fukuda (Hoka) and others out at a pace of around 3:34/km. Yamaguchi survived the longest at that pace, holding it until almost 70 km before starting to slow. Okayama, who had fallen off pace after 50 km, passed him not long past 80 km and pushed on to win in 6:23:16. Yamaguchi, Ruel and Fukuda all DNFd, Fukuda after only 50 km, Ruel after 60 km, and Yamaguchi not making it to 90 km. Having ignored the early fast pace and stuck to a steady 4:00/km, Masato Takahashi (Track Tokyo) was 2nd in 6:43:01. Veteran Hideo Nojo (Mitsui Fudosan)...
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