🌦️ Tokyo Yamathon 2025 Event Report

A Celebration of Spirit, Resilience, and Community

The 2025 Tokyo Yamathon once again proved that it’s more than a challenge — it’s an experience that unites people. This year saw 1,008 teams take part across three categories: Full, Half, and Half-a-Half, marking one of the strongest turnouts in Yamathon history. Despite heavy rain at times, spirits stayed high and smiles were everywhere.

📊 Participation Overview

A final total of 1,008 teams joined the 2025 Tokyo Yamathon —

682 in the Full course, 236 in the Half, and 90 in the Half-a-Half.

Full Yamathon: 551 finishers, 131 DNF (81% completion rate)

Half Yamathon: 213 finishers, 23 DNF (90% completion rate)

Half-a-Half: 82 finishers, 8 DNF (91% completion rate)

This year’s overall completion rate stood at 84%, an impressive number considering the weather challenges. Every DNF tells a story of effort and persistence — many teams continued walking through multiple downpours before deciding to stop safely, embodying the Yamathon’s true spirit.

🪪 New for 2025: Official Self-Print Certificates

Every team that joined the 2025 Tokyo Yamathon can now download and print an official certificate through our new self-print service:

👉 [https://www.tokyo-yamathon.com/cert-search]

Finishers receive a Finisher Certificate showing their official time and place.

Participants who joined and gave a solid effort can download a Participation Certificate.

This is a self-print PDF service. You download the file yourself and print or share it freely.

Please note that photo timestamps may differ slightly from certificate times. The certificate time is the most accurate — calculated using each team’s wave start time vs the event’s official start time**. For any timing concerns, contact [results(at)tokyo-yamathon.com]

🌧️ A True Test of Endurance

The Full Yamathon saw some of the toughest conditions yet — but also the most inspiring teamwork. The average completion time was just over 10 hours, with the fastest teams finishing in under four. The Half and Half-a-Half courses were packed with positive energy, laughter, and muddy sneakers.

❤️ Collective Impact

Together, participants walked tens of thousands of kilometers across Tokyo — all in support of IVG-Japan’s community impact initiatives. Whether you crossed the finish line or not, every step counted toward making a difference.

Rain may have slowed a few feet, but it didn’t dampen the Yamathon spirit.

“Together, participants covered nearly 100,000 kilometers across Tokyo.”

👟 The Power of Volunteers

Behind every step walked were the people who made it all possible.From course marshals and logistics crews to registration staff, photographers, and the finish line team — more than 6,850 volunteer hours were logged across planning, setup, and event day support.

That effort represents an estimated ¥8.5 million in community value, entirely powered by individuals who gave their time, energy, and heart to ensure participants had a safe and memorable experience.

The Tokyo Yamathon wouldn’t exist without this volunteer network — it’s proof that the event’s spirit of contribution extends far beyond the walkers themselves.

🙏 Thank You and Looking Ahead

A huge thank-you to every participant, volunteer, and sponsor who made the 2025 Tokyo Yamathon a success. The event reminded us that endurance isn’t only physical — it’s about unity, compassion, and purpose.

Planning is already underway for Tokyo Yamathon 2026, marking the 17th edition of this remarkable event. We invite anyone interested in volunteering to join us and help continue the Yamathon legacy. Contact us at volunteer(at)tokyo-yamathon.com