Weekend Track Roundup

The two-day Hyogo Relay Carnival was the biggest meet of the weekend on the Japanese calendar. Sarah Wanjiru (Daito Bunka Univ.) kicked off her 2nd academic year with a 31:48.11 win in the GP women's 10000 m, beating Pauline Kamulu (Route Inn Hotels) by 4 seconds. Emmanuel Kiplagat (Mitsubishi Juko) had a tighter win in the GP men's 10000 m, 27:58.01 to 27:58.35 over Jonson Mugeni (Asia Univ.). Kenyans also dominated the men's B and C-heats, Nelson Mandela (Obirin Univ.) taking the B-heat by 0.06 over Stephen Muthini (Soka Univ.) in 28:05.37 and Patrick Wambui (NTT Nishi Nihon) the C-heat in 28:14.83. Top Japanese marks across the four races were 32:24.50 by Sora Shinozakura (Panasonic), 28:11.30 by Yuta Nakayama (JR Higashi Nihon), 28:41.68 by Masashi Nonaka (Toyota), and 28:42.38 by former Rikkyo University head coach Yuichiro Ueno (Hiramatsu Byoin).

The GP women's 3000 mSC might have been the best race of the meet, both Miu Saito (Nittai Univ.) and Manami Nishiyama (Mitsui Sumitomo Kaijo) going under the old meet record in 9:47.76 and 9:49.77, and previous MR holder Reimi Yoshimura (Cramer Japan TC) also getting under 10 minutes in 9:59.14 for 3rd. Four of the top five men in the GP 3000 mSC ran PBs, World XC relay team member Yutaro Niinae (Aisan Kogyo) winning in 8:33.43, Shintaro Nakazono (SID Group) 2nd in 8:34.76, and Asahi Kuroda (Aoyama Gakuin Univ.) 3rd in 8:35.10.

NR holder Nozomi Tanaka (New Balance) duly set a MR 4:07.79 to win the GP women's 1500 m by over 3 seconds. The GP men's 800 m was unremarkable, Kaishi Kitamura taking the win in 1:48.29. Mitsu Ozaki (Sysmex) won the non-GP women's 5000 m in 15:59.91 in a photo finish with Rina Shimizu (North), who clocked in at 15:59.92. Only a high school boys' 5000 m was on the menu for men, with local Koki Niizuma (Nishiwaki Kogyo) 1st in 14:25.87.

The Tokai University Time Trials meet also had some quality marks, led by Hibiki Yoshida (Soka Univ.) with a 28:12.82 PB for the win in the men's 10000 m A-heat. A trio of men from Toyo University took the next three spots, Mashu Nishimura 2nd in 28:45.98, Ryota Kobayashi 3rd in 28:49.53, and former H.S. 5000 m NR setter Kosuke Ishida continuing his comeback with a 28:49.61 for 4th. Patrick Kamau (Jobu Univ.) took the B-heat in 29:51.22. Hayato Sano (Musashino Gakuin Univ.) ran a decent 3:48.95 to win the men's 1500 m A-heat.

The Kokushikan University Time Trials meet had a good men's 10000 m, where Koei Yahara (Hosei Univ.) got the win in 29:00.29 over Goki Higashihara (Meiji Univ.), 2nd in 29:00.94.

Overseas, four Japanese athletes were in action at the Xiamen Diamond League meet. Shunsuke Izumiya was 3rd in the men's 110 mH with a 13.17 -0.3 m/s SB Tomohiro Shinno was 4th in the men's high jump, clearing 2.24 m on his 2nd attempt but missing 2.27 m. Ryo Wada was 5th in the men's 100 m in 10.31 -0.6 m/s, former NR holder Yoshihide Kiryu 7th in 10.38.

2026 Tokyo Marathon Elite Field

The Mar. 1 Tokyo Marathon has great fields this year, so let's get right to it. The women's field has 3 of last year's top 10, winner for the 2nd year in a row and Tokyo CR holder Sutume Asefa Kebede , 3rd-placer and 2025 Chicago winner Hawi Feysa , and 5th-placer and 2025 Berlin winner Rosemary Wanjiru , plus 2024 Valencia winner Megertu Alemu , 2025 Prague winner Bertukan Welde , 2024 Paris winner Mestawut Fikir , 2024 Osaka winner Waganesh Mekasha , former WR holder Brigid Kosgei , and a lot more. Japanese hopes pretty much go to all-time #7 Ai Hosoda , 2:20:31 in Berlin 2024 but who announced this month that she is retiring after Tokyo despite having qualified for the 2028 Olympic marathon trials with her 2:23:27 for 6th in Sydney last year. Other internationals include Canadian Malindi Elmore , American Sara Hall , a big Chinese group led by Yuyu Xia , Poland's Aleksandra Brzezińska and Australian Vanessa Wilson . The men's race has 5 of last year's top 1...

Measuring Marathon Courses by Bicycle

http://news.searchina.ne.jp/disp.cgi?y=2013&d=0110&f=column_0110_034.shtml translated by Brett Larner The full marathon is a sport where you compete over 42.195 km, but how do they go about measuring that distance? Today we're going to look a little bit at how they go about certifying the distance of a marathon. The reality is that major international marathons use a bicycle to measure the distance. This rule is an international standard, and the same method of measurement is used everywhere. It was put into place in 1986. In order to ensure that the same method is used everywhere, a bicycle that meets IAAF specifications must be used for measurement. In the case of Japan's major marathons, to be certain that the distance is correct a provisional measurement is first made. Before the course is certified using a bicycle the course is measured using a 50 m-long length of wire to determine that it is in fact 42.195 km. When a bicycle is u...

Ai Hosoda Announces Retirement

photo © 2025 Victah Sailer/Photo Run, all rights reserved On Jan. 8 the Edion women's corporate team announced that Ai Hosoda , 30, will retire at the end of March this year. The Tokyo Marathon will be her last race. At Nagano Higashi H.S. Hosoda ran in the National High School Ekiden her 2nd and 3rd years. During her 3rd year at Nittai University she won both the 5000 m and 10000 m at the Kanto Region University Track and Field Championships, going on to win the bronze medal in the 10000 m at the World University Games in her 4th year at Nittai. After graduating she joined the Daihatsu corporate team, debuting at the 2019 Nagoya Women's Marathon in 2:29:27. 2 years later she transferred to Edion. She qualified for the Paris Olympics marathon trials at the 2022 Nagoya Women's Marathon and finished 3rd in the trials in the fall of 2023, but was later bumped down to Olympic alternate after another athlete ran a faster time. Instead of the Olympics, Hosoda ran the 2024 Ber...

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