Skip to main content

Ichiyama Runs 8th-Fastest JPN Time Ever to Win National Corporate Half


Following up last weekend's NR-breaking Marugame Half where the top 24 men went under 61 minutes, today's National Corporate Half Marathon delivered another big one. Yuma Nishizawa (Toyota Boshoku) and Shadrack Kipchirchir (Chudenko) broke away from the pack mid-race and opened a substantial lead, but in the last few km Tsubasa Ichiyama (Sunbelx) closed the gap and passed them by. Ichiyama took almost a minute off his PB to win in 1:00:22, the 8th-fastest time ever by a Japanese man.

Favorite Tatsuhiko Ito (Honda) closed hard to pass Nishizawa and Kipchirchir on the track but couldn't catch Ichiyama, 5 seconds behind in 2nd in 1:00:27 with Nishizawa right behind in 1:00:29 for 3rd. Coming off an injury in November that held him back at last month's New Year Ekiden, Ichiyama told JRN post-race, "This was a big confidence builder for my next race." That would be next month's Tokyo Marathon.

The top 14 men were all under 61 minutes. Compared to that the women's race was relatively conservative, with only 2 women clearing 70 minutes. Shiori Yoshizono (Tenmaya) got the win in 1:09:45, holding off Kaede Kawamura (Iwatani Sangyo) by 5 seconds. Kazuna Kanetomo (Mitsui Sumitomo Kaijo) was 3rd in 1:10:20.

Paris Olympian Yuma Yamamoto (Sekisui Kagaku) had a characteristically good one in the women's 10 km, taking the win by 30 seconds in 32:33. For the first time the National Corporate Championships featured a men's 10 km, which went to Komazawa University grad Taiyo Yasuhara (Kao) in 29:08.

National Corporate Half Marathon and 10 km Championships

Yamaguchi, 9 Feb. 2025

Men's Half Marathon
1. Tsubasa Ichiyama (Sunbelx) - 1:00:22 - PB
2. Tatsuhiko Ito (Honda) - 1:00:27
3. Yuma Nishizawa (Toyota Boshoku) - 1:00:29
4. Shadrack Kipchirchir (Chudenko) - 1:00:39
5. Tamaki Fujimoto (Logisteed) - 1:00:40
6. Hideyuki Tanaka (Toyota) - 1:00:43
7. Yoshiki Oshiro (Toyota Kyushu) - 1:00:43
8. Kyohei Hosoya (Kurosaki Harima) - 1:00:43
9. Hirotsugu Yoshikawa (Yakult) - 1:00:45
10. Ryuto Urushibata (Yasukawa Denki) - 1:00:47
11. Waweru Nganga (Chugoku Denryoku) - 1:00:48
12. Toru Kubota (Honda) - 1:00:49
13. Yusaku Nomura (Toyota) - 1:00:58
14. Kazuki Moriya (Mitsubishi Juko) - 1:00:59
15. Shunsuke Kikuchi (NTN) - 1:01:01
16. Shunta Uchida (Toyota) - 1:01:05
17. Kento Yamauchi (Kyudenko) - 1:01:06
18. Shota Nishimura (Aichi Seiko) - 1:01:08
19. Kosei Matsunami (Kurosaki Harima) - 1:01:12
20. Shoya Kawase (Honda) - 1:01:14
21. Daiki Ozawa (Fujitsu) - 1:01:15
22. Kiyoshi Koga (Yasukawa Denki) - 1:01:15
23. Tatsuya Tsunashima (YKK) - 1:01:16
24. Hironori Muramatsu (Logisteed) - 1:01:16
25. Masanori Sumida (Aichi Seiko) - 1:01:18
-----
50. Yuito Yamamoto (Subaru) - 1:02:06
75. Hiroshi Ichida (Asahi Kasei) - 1:02:54
100. Shumpei Tomita (Logisteed) - 1:03:29
125. Hiroto Ishiwata (SID Group) - 1:04:39
150. Yudai Takayama (Nittetsu Stainless) - 1:06:29

Women's Half Marathon
1. Shiori Yoshizono (Tenmaya) - 1:09:45
2. Kaede Kawamura (Iwatani Sangyo) - 1:09:50
3. Kazuna Kanetomo (Mitsui Sumitomo Kaijo) - 1:10:20
4. Yuri Mitsune (18 Ginko) - 1:10:23
5. Manami Nishiyama (Mitsui Sumitomo Kaijo) - 1:10:27
6. Akira Ozaki (Sysmex) - 1:10:49
7. Rina Shimizu (Noritz) - 1:11:14
8. Riko Iijima (SID Group) - 1:11:14
9. Wakana Itsuki (Kyudenko) - 1:11:14
10. Shiori Zama (Shimamura) - 1:11:18

Men's 10 km
1. Taiyo Yasuhara (Kao) - 29:08
2. Sosuke Yoshimura (Aisan Kogyo) - 29:15
3. Yuta Mikami (Chugoku Denryoku) - 29:24
4. Yuya Iwasaki (Osaka Gas) - 29:35
5. Nagisa Moriso (Chugoku Denryoku) - 29:43

Women's 10 km
1. Yuma Yamamoto (Sekisui Kagaku) - 32:33
2. Momoka Kawaguchi (Uniqlo) - 33:03
3. Ayu Henmi (Toyota Jidoshokki) - 33:06
4. Sara Isobe (Toyota Jidoshokki) - 33:10
5. Akari Matsumoto (Sekisui Kagaku) - 33:10
6. Momoa Yamada (Shimamura) - 33:10
7. Miu Yagi (Iwatani Sangyo) - 33:11
8. Rio Matsutani (Denso) - 33:13
9. Erina Yasui (Iwatani Sangyo) - 33:16
10. Rion Furukawa (Nitori) - 33:30

© 2025 Brett Larner, all rights reserved

Buy Me A Coffee

Comments

Most-Read This Week

Hassan Runs NR/CR for Osaka Win, Dibaba Hits Women's CR, Yoshida and Shuley Earn Legends

This was maybe the most entertaining marathon in years. After rocking the 2nd leg at last year's Hakone Ekiden Hibiki Yoshida (Sunbelx) ran an incredible 1:01:01 CR for the 21.9 km New Year Ekiden 2nd leg last month, equivalent to a 58:47 half marathon. That predicted a 2:03:27 marathon if he ever ran one, and when Yoshida announced he was debuting at this year's Osaka Marathon he wasted no time in saying it'd be a shot at the 2:04:55 NR. Things went out fast enough with a 14:50 split through 5 km, 2:05:11 pace, but Yoshida just couldn't hold back and took off at 8 km. He clearly DGAF about what was probably going to happen as his projected finish kept getting faster, 2:04:41, 2:04:15, 2:03:51, 2:03:40, edging closer and closer to what his New Year time predicted, but not helped along by the fact that he missed 4 out of his first 5 drink bottles. People laughed, and then cheered him on. 30 km was the first time he slowed, his finish projection dropping to 2:03:53, an...

Osaka Marathon Preview

The Osaka Marathon is Sunday, one of Japan's biggest mass-participation races and the next stop on the calendar for its elite marathoners hoping to qualify for the L.A. Olympics marathon trials in the fall of 2027. Last year it snowed mid-race, but this year is looking warmer than ideal given the season, with sunny skies, almost no wind, and temps forecast to be 11˚ at the start and rising to 19˚ by the time the winners are finishing. NHK is broadcasting Osaka with a heavy emphasis on the men's race, and if you've got a VPN you should be able to watch it from overseas. There's also official streaming on Youtube starting at 8:30 a.m. local time, although it doesn't look like it's the same as what NHK will be showing. Given Osaka's history at the elite level as the continuation of the men-only Lake Biwa Mainichi Marathon, the women's field is small relative to the men's, just enough to tick World Athletics' label requirements and with almost no do...

Nagoya Women's Marathon Elite Field

Last year's top 3 Sheila Chepkirui , Sayaka Sato and Eunice Chebichii Chumba are back for this year's Nagoya Women's Marathon on Mar. 8, but things are being set up more for it to be a race between Chepkirui, 2:17:49 in Berlin 2023, Aynalem Desta , 2:17:37 in Amsterdam last fall, and Japanese NR holder Honami Maeda , 2:18:59 at the Osaka International Women's Marathon in 2024. Aynalem has the freshest sub-2:20 of the 3, with neither Chepkirui nor Maeda having done it in 2 years. Maeda's only recent result is a 1:10:07 from Houston last month, but when she ran her NR she didn't have any kind of tuneup race to indicate her fitness so it's probably best not to read too much into that. If it goes out as a 2:18 race those are the only 3 who can probably hang with it. If it turns out to be more of a 2:20 race like when Chepkirui won in 2:20:40 last year then there's a group of 7 at the 2:20-2:22 level who will be in the picture, including Chumba, Selly Chep...