37th CHALLENGE FUJI 5 LAKES ULTRAMARATHON

.Notice

  • ◆Important Announcement◆
    Credit card and PayPal payments are not available in Turkey and Russia.


    Entry will close once capacity is reached, even within the entry period.

    Participation information will be sent by email and posted on the website (approx. 3 weeks before the race). Please ensure your email settings allow receipts from our domain (Email Setup Guide).

    Please review the participation confirmation sent via email before coming to the venue information desk.

    Run Japan cannot answer inquiries regarding the refund guarantee program. Please contact the race office directly.

    [Common Rules]
    Minimum food, warm clothes, a mask, and rain gear are required (no shelters available if it rains).

    ■Water Provision
    Water is available at aid stations, but paper cups are not provided. Please bring your own bottle/cup.
    Carrying a bottle reduces heatstroke and leg cramp risks. Fill it with water/sports drinks, and use your cup for other drinks (e.g., cola).

    [FUJI100K RECORD CHALLENGE]
    • No U25 category available.
    • Running watch mandatory (participants must count their own laps).
    • JAAF-registered runners can enter via the "JAAF-Registered Category."
    *If the event receives official sanctioning, registration with the JAAF for the 2027 season will be required for the JAAF-Registered Category.
    *If your association uses JAAF IDs instead of Registration Numbers, select "None". If registration is in progress, select "Pending" and update it via "My Page" before the deadline.