Okayama and Yamaguchi Gold and Silver, JPN Men and Women Team Gold and Bronze at IAU 100 km World Championships

Relative newcomers Haruki Okayama and Jumpei Yamaguchi ran big PBs to take the top two spots in the men's race at the IAU 100 km World Championships Saturday in Berlin. 2018 world champ Hideaki Yamauchi was a last-minute scratch after testing positive for COVID-19, leaving Okayama, Yamaguchi and world record holder Nao Kazami to take things out hard in a quintet with Brazilian Felipe Silva and French athlete Guillaume Ruel.

Ruel soon broke away to open a lead of around 2 minutes by halfway. Behind him, a South African trio caught up to the Japanese group, prompting Yamaguchi to take off in pursuit of the lead. On every 7.5 km lap he closed around 30 seconds on Ruel, finally coming within 20 seconds at around 70 km. But just as he was about to take the lead, Yamaguchi ran into trouble, at exactly the time that Okayama drove by hard to move into 1st instead of him.

Running the 100 km distance for only the second time, by 77.5 km he had almost a minute lead over Ruel and never looked back. Okayama came home in 6:12:10, a PB by over 4 1/2 minutes and less than 3 minutes off Kazami's 6:09:14 WR. After his 6:16:44 debut this spring at the Shibanuma 100 km Okayama said that his goal is to break the WR at Lake Saroma next year, and with this performance behind him that definitely looks in range.

Yamaguchi was in free-fall after Okayama passed him, losing ground he had fought hard to make up on Ruel and getting into danger of being caught by Dutch runner Piet Wiersma and Norweigian Sebastian Conrad Hakansson. But over the last two laps he rallied, closing on Ruel again, then passing him for 2nd, then doing just enough to hold off both chasers and stay in the medals. Hunched over at times and in obvious pain, Yamaguchi toughed out a 6:17:19 for 2nd, a PB by 5:16 that kept him 1:28 ahead of bronze medalist Wiersma. Pure guts running isn't always pretty.

Kazami held on to 6th behind Hakansson and Ruel in 6:21:43. That was enough to land Japan the team gold medal and add another line to the resume of one of the great ultra runners of our time. Kazami was the only man in the top 10 not to run a PB, a sign of how high the level really was in this historic race.

In the women's race France's Camille Chaigneau and France's Noora Honkala went out hard, top-ranked Japanese woman Miho Nakata and Lithuanian Gitana Akmanavičiūtė following at a distance. By 20 km Nakata and Akmanavičiūtė had come up within 5 seconds of the leaders, but a surge from Chaigneau made sure a lead group never came together.

As Chaigneau built what looked like a dominant lead Nakata spent the rest of the race hovering around 6th. Teammate Mai Fujisawa came up to 7th and looked like she might join Nakata, but over the second half the dynamic changed dramatically. Another French runner, Floriane Hot, took the lead from Chaigneau, pushing on to take gold in 7:04:03. American Courtney Olsen moved into the bronze position behind Chaigneau but was caught by Irish runner Caitriona Jennings, who looked strong enough to have a shot at Chaigneau and silver. Chaigneau just held her off, taking 2nd in 7:06:32, Jennings landing bronze in 7:07:16.

Nakata was 6th in 7:19:12, a PB by over 8 1/2 minutes and moving up to 4th-fastest Japanese woman ever. The veteran Fujisawa fell to 10th in 7:32:22, but that was only 29 seconds off her lifetime best. Like Kazami, Fujisawa was the athlete in the top 10 not to run a PB. Mikiko Ota was the 3rd Japanese woman home at 12th in 7:35:25, just 1:07 off her best. 4th team member Aiko Kanematsu was a DNF late in the race, but with only the top 3 scoring the Japanese women took team bronze behind gold medalists U.S.A. and silver medalists France. As in the men's race, the number of PBs up top made this one of the top women's 100 km races in history.

Taken all together it was one of Japan's best-ever team performances at the 100 km World Championships, especially notable for the PBs and near-misses. Show up to an international competition and run like you're there to do your absolute best, unafraid when everyone else goes out hard. Japan's ultra national team could teach a thing or two to most of the country's distance runners in the shorter events.

IAU 100 km World Championships

Berlin, Germany, 27 Aug. 2022

complete results

Men - Individual

1. Haruki Okayama (Japan) - 6:12:10 - PB

2. Jumpei Yamaguchi (Japan) - 6:17:19 - PB

3. Piet Wiersma (Netherlands) - 6:18:47 - PB

4. Sebastian Conrad (Norway) - 6:19:01 - PB

5. Guillaume Ruel (France) - 6:19:51 - PB

6. Nao Kazami (Japan) - 6:21:43

7. Elov Olsson (Sweden) - 6:30:14 - PB

8. Manel Deli Andujar (Spain) - 6:30:24 - PB

9. Gareth King (Great Britain) - 6:32:05 - PB

10. Alexander Bock (Germany) - 6:34:40 - PB

Men - Team

1. Japan - 18:51:12

2. France - 19:55:10

3. South Africa - 20:05:58

4. Germany - 20:08:17

5. Great Britian - 20:27:07

Women - Individual

1. Floriane Hot (France) - 7:04:03 - PB

2. Camile Chaigneau (France) - 7:06:32 - PB

3. Caitriona Jennings (Ireland) - 7:07:16 - PB

4. Courtney Olsen (U.S.A.) - 7:15:29 - PB

5. Satu Lipiainen (Finland) - 7:15:35 - PB

6. Miho Nakata (Japan) - 7:19:12 - PB

7. Anna Kacius (U.S.A.) - 7:24:41 - PB

8. Silvia Luna (Italy) - 7:29:01 - PB

9. Federica Moroni (Italy) - 7:31:45 - PB

10. Mai Fujisawa (Japan) - 7:32:22

Women - Team

1. U.S.A. - 22:14:46

2. France - 22:16:46

3. Japan - 22:26:59

4. Italy - 23:03:37

5. Great Britian - 23:19:06

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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