Skip to main content

Osako and Murayama Twins Lead National Record Shot at Marugame Half

by Brett Larner
click here for women's field listing

As strong as its women's field looks, the men's field for the Feb. 5 Kagawa Marugame International Half Marathon is something else.  The half marathon is the sweet spot of Japanese training, the distance that the top university men focus on for the Hakone Ekiden and the best corporate men at the New Year Ekiden national championships.  The official half marathon Japanese national record is 1:00:25 by Atsushi Sato at the 2007 World Half Marathon, but it's pretty common to see the top men running that kind of time on the longest half marathonish-length stages at both Hakone and New Year.  If they all got together, focused, and put the same intensity and drive into a serious half marathon the national record would surely fall, and maybe even the hour mark.  This year's Marugame looks like the best chance to date for that to happen.

Up front: 59:01 man Kenneth Kipkemoi and once-upon-a-time sub-59 man Atsedu Tsegay of Ethiopia.  Positioned just ahead of the Japanese NR: Abraham Kipyatich of Kenya and wunderkind Callum Hawkins of Great Britain.  Right at the level of the current generation of Japan's best: Bernard Kimanyi and Dominic Nyairo of Kenya.  And following them, most of the very best Japan has to offer:

  • 5000 m NR holder Suguru Osako, a member of the Nike Oregon Project with a 1:01:47 Asian junior record half marathon debut and a 1:01:10 equivalent at Hakone.
  • 10000 m NR holder Kota Murayama in his serious half marathon debut, with a 58:26 for 20 km to his name giving him mid-1:01 credentials.
  • His twin brother Kenta Murayama with a 1:00:50 best in Marugame in 2014.
  • Keita Shitara, 1:01:12 at the 2015 National Corporate Half.
  • His twin brother Yuta Shitara, 1:01:48 at the New York Half at age 20 and a 1:00:11 equivalent at last year's New Year Ekiden.
  • Daichi Kamino, 1:01:21 in Marugame two years ago following a spectacular uphill run on Hakone's Fifth Stage and just as ascendant as a young corporate runner.
  • Chihiro Miyawaki, 1:00:53 to win the 2012 National Corporate Half.

There are only two or three names missing from an otherwise perfect collection of Japanese runners to collectively go for the national record, sure to get further support from the massive number of 62 minute-range runners just behind them.  Kenta Murayama told JRN that he and Kota will be going for a time under 1:00:30, at worst under 1:00:50, and the presence of Osako, a training partner of Galen Rupp who was scheduled to go for the U.S.A. NR last weekend, suggests big things.  Marugame usually has ideal weather that contributes to world record-setting depth at quality.  The current forecast calls for cloudy skies and race time temperatures between 2 and 5 degrees Celsius, a little on the cold side but still within a range that would allow for something special.

71st Kagawa Marugame International Half Marathon
Men’s Elite Field Highlights
Marugame, Kagawa, 2/5/17
click here for complete field listing
times listed are best within last three years except where noted

Kenneth Kipkemoi (Kenya) – 59:01 (Valencia 2014)
Abraham Kipyatich (Kenya) – 1:00:03 (Berlin 2015)
Callum Hawkins (Great Britain) – 1:00:24 (Glasgow 2016)
Bernard Kimanyi (Kenya/Yakult) – 1:00:41 (Den Haag 2015)
Dominic Nyairo (Kenya/Yamanashi Gakuin Univ.) – 1:00:50 (Marugame 2016)
Kenta Murayama (Japan/Asahi Kasei) – 1:00:50 (Marugame 2014)
Keita Shitara (Japan/Konica Minolta) – 1:01:12 (Nat’l Corp. Half 2015)
Fabiano Sulle (Tanzania) – 1:01:19 (Marugame 2016)
Daichi Kamino (Japan/Konica Minolta) – 1:01:21 (Marugame 2015)
Suguru Osako (Japan/NOP) – 1:01:47 (Ageo City 2010)
Kenta Ueda (Japan/Yamanashi Gakuin Univ.) - 1 02:01 (Ageo City 2016)
Koki Takada (Japan/Sumitomo Denko) – 1:02:02 (Ageo City 2014)
Takashi Ichida (Japan/Asahi Kasei) – 1:02:03 (Ageo City 2014)
Akira Aizawa (Japan/Toyo Univ.) – 1:02:05 (Ageo City 2016)
Keita Shioya (Japan/Subaru) – 1:02:11 (Marugame 2016)
Chihiro Miyawaki (Japan/Toyota) – 1:02:18 (Nat’l Corp. Half 2015)
Masaya Taguchi (Japan/Honda) – 1:02:19 (Marugame 2016)
Kenya Sonoda (Japan/JR Higashi Nihon) – 1:02:20 (Nat’l Univ. Half 2015)
Kazuki Tamura (Japan/Aoyama Gakuin Univ.) – 1:02:22 (Nat’l Univ. Half 2015)
Shuji Matsuo (Japan/Kyudenko) – 1:02:25 (Nat’l Corp. Half 2015)
Gen Hachisuka (Japan/Chuo Gakuin Univ.) - 1:02:26 (Marugame 2015)
Shusei Ohashi (Japan/Raffine) – 1:02:27 (Nat'l Corp. Half 2015)
Daiki Taguchi (Japan/Hitachi Butsuryu) - 1:02:30 (Nat'l Univ. Half 2014)
Yuki Oshikawa (Japan/Toyota Kyushu) – 1:02:30 (Marugame 2014)
Atsedu Tsegay (Ethiopia) – 1:02:39 (Rock ‘n’ Roll Lisbon 2015)
Wataru Ueno (Japan/Honda) – 1:02:39 (Marugame 2014)
Yusuke Nishiyama (Japan/Komazawa Univ.) – 1:02:43 (Nat’l Univ. Half 2015)
Natsuki Terada (Japan/JR Higashi Nihon) – 1:02:43 (Marugame 2015)
Masaru Aoki (Japan/Kanebo) – 1:02:45 (Nat’l Corp. Half 2015)
Rei Omori (Japan/Chuo Gakuin Univ.) - 1:02:47 (Nat'l Univ. Half 2015)
Tomoki Ota (Japan/Waseda Univ.) - 1:02:48 (Ageo City 2016)
Ryuji Okada (Japan/Otsuka Seiyaku) - 1:02:48 (Nat'l Corp. Half 2015)
Suehiro Ishikawa (Japan/Honda) – 1:02:49 (Marugame 2016)
Shota Inoue (Japan/Toyota) – 1:02:49 (Marugame 2015)
Takuya Noguchi (Japan/Konica Minolta) – 1:02:50 (Marugame 2014)
Taiga Machizawa (Japan/Chuo Univ.) - 1:02:52 (Nat'l  Univ. Half 2015)
Yuta Shitara (Japan/Honda) – 1:02:52 (Marugame 2015)
Hideaki Sumiyoshi (Japan/Kokushikan Univ.) - 1:02:53 (Marugame 2016)
Chiharu Takada (Japan/JR Higashi Nihon) – 1:02:58 (Marugame 2016)

20 km
Kota Murayama (Japan/Asahi Kasei) – 58:26 (Yosenkai 20km 2014)
Kazuya Shiojiri (Japan/Juntendo Univ.) – 59:36 (Takashimdaira 20km 2016)

Debut
Jonathan Ndiku (Kenya/Hitachi Butsuryu) – 27:11.23 (Nittai Univ. 2016)

© 2017 Brett Larner
all rights reserved

Comments

Most-Read This Week

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...