Tokyo Yamathon 2025 – Partnership Opportunities Now Open
- Apr 27
- 3 min read
Updated: May 10


At Tokyo Yamathon, every step counts—and every sponsorship partner helps pave the way.
After a record-breaking 2024, we’re excited to announce our 2025 Event Partnership
Packages, designed to give companies the opportunity to boost visibility, foster team spirit, and make a tangible social impact through one of Tokyo’s most inspiring charity challenges.
💬 What Our Event Partners Say

“Yamathon was a great charity event, and the support of our team and volunteers was remarkable. It was an unforgettable team-building activity and all Salesforce employees who participated enjoyed it tremendously. Thank you very much and we hope our activities will help the children.” — Takashi Itoh, Salesforce Japan

“We are happy to see the Tokyo Yamathon gaining more popularity each year. Last year was certainly another rousing success, and we are excited to see that people are having a great time while helping a meaningful charity. Since 2013,
JPMorganChase has been supporting the International Volunteer Group, and we hope to see Yamathon as a platform to support our society in the years to come.” — Tsuyoshi Nakai, JPMorganChase
💡 Why Partner with the Yamathon?
Empowering Us, Exposure for You
Your partnership fuels the event—covering venue hire, team bibs, safety provisions, and volunteer support—so that 100% of every team’s entry fee can be donated directly to our partner NPOs.
Your brand gets premium visibility across multiple touchpoints:
Before the event – Social media, press, promotional materials, and our official website
During the event – Sponsor boards, team number cards, official T-shirts, posters, certificates, and more
After the event – Continued association with the impactful projects and NPOs you helped fund
📦 2025 Event Partner Packages
TIER | PREMIER – ¥750,000 | MAJOR– ¥500,000 |
Logo on inflatable arch, start/finish line & mailed team pack | ✔ | |
Company relaxation area at Full Yamathon finish | ✔ | |
Mention in official countdown video | ✔ | |
Employee volunteer opportunities with NPO partners | ✔ | |
Logo on sponsor board, website, team cards, posters, volunteer tees & finisher certificates | Prominent | Displayed |
Flexible team registration for employees | ✔ | ✔ |
Practice walk sessions for first-time participants | ✔ | ✔ |
Employee briefing (in-person or virtual) | ✔ | ✔ |
Note: An Event Partner Package does not include the cost of company team entries.
🆕 What’s New in 2025?
Half-a-Half Yamathon: A shorter walk to welcome families and first-timers
Expanded NPO engagement: Volunteer visits to children’s hospices and conservation sites
Team-building extras: Pre-event walking sessions, step count challenges, and the “Why I Walk” campaign
Ambitious fundraising goal: ¥14 million to support education, disaster relief, conservation, and hospice care
🗓️ Key Dates
Event Partnership Confirmation Deadline: September 1rst, 2025
Team Registration Opens: Mid-June
Event Day: Saturday, October 4th, 2025
🤝 Partner With Purpose
Help us support WAFFLE, Tochigi Conservation Corps, Japan Children’s Hospice Association, and World Central Kitchen in their vital work.
📩 For event partnership inquiries, reach out to info@ivgjapan.org
Let’s walk the talk—together.
Why not join in on the fun? Whether you're up for the challenge of the Yamathon or want to be part of the excitement as an event volunteer, there's a place for everyone! Experience the thrill of exploring Tokyo, connect with amazing people, and contribute to a great cause. Lace up your shoes or lend a helping hand—either way, you'll make unforgettable memories. Join us and be part of something special!
Organizer:
IVG - JAPAN
© 2024 International Volunteer Group (General Incorporated Association)
一般社団法人インターナショナルボランティアグループ
Yamathon ™ and ヤマソン™ are registered trademarks of IVG-Japan.
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