The 2025 Mt. Fuji International Marathon takes place on Sunday, December 14, 2025, in Fujikawaguchiko Town, Yamanashi Prefecture, Japan. This AIMS and JAAF-certified marathon features a scenic 42.195 km course that winds around Lake Kawaguchi and Lake Saiko, offering runners stunning views of the surrounding landscape. December in Fuji Kawaguchiko typically brings cold temperatures ranging from 0-10°C (32-50°F), with possible frost in early morning hours and a chance of clear skies ideal for viewing Mt. Fuji. Participants can expect well-organized race conditions with 12 water stations, distance markers every kilometer, and a 6-hour time limit for completion. The event also includes a companion Charity Fun Run (~11 km) that starts after the main marathon, allowing families and recreational runners to participate in supporting the Mt. Fuji World Cultural Heritage Conservation Fund.
What is the official course distance for the main marathon?
The main marathon course is 42.195 km, certified by both AIMS (Association of International Marathons and Distance Races) and JAAF (Japan Association of Athletics Federations). The route takes runners around Lake Kawaguchi and Lake Saiko, offering scenic views throughout the race.
What are the time limits for completing the race?
→Main Marathon: 6 hours (gross time from the 9:00 AM start)
→Charity Fun Run: 3 hours (gross time from the 9:20 AM start)
What are the eligibility requirements for participants?
Main Marathon:
→Must be 18 years or older
→Must be in good health and capable of finishing within 6 hours
Charity Fun Run:
→Must be 12 years or older
→Must be in good health
What is the race schedule for December 14, 2025?
→Opening ceremony: 8:45 AM
→Main Marathon start: 9:00 AM
→Charity Fun Run start: 9:20 AM (after opening ceremony)
→Souvenir shop operating hours: 7:00 AM - 4:00 PM
How many runners can participate in each event?
Main Marathon:
→Japan residents: 2,300 runners
→Overseas participants: 3,400 runners
Charity Fun Run:
→Open to all eligible participants with no specified capacity limit
What are the registration fees for the main marathon?
Japan Residents:
→Early entry: ¥10,900
→General entry: ¥12,900
→GakuRUN-U25 Project (under 25): ¥1,000 discount applied to either tier
Overseas Participants:
→¥25,000 (includes long-sleeve T-shirt, luggage storage, and paid parking)
What are the registration fees for the Charity Fun Run?
Japan Residents:
→Early entry: ¥4,400
→General entry: ¥4,900
→U25 Project (under 25): ¥1,000 discount applied to either tier
Overseas Participants:
→¥10,000 (includes long-sleeve T-shirt, baggage storage, and parking)
What is included in the overseas participant registration fee?
For the main marathon, overseas participants receive:
For the Charity Fun Run, overseas participants receive:
→Long-sleeve T-shirt
→Baggage storage
→Parking
What bib and timing chip delivery options are available?
→Advance delivery (Japan residents only): +¥1,500 fee, available at Alpen TOKYO (Shinjuku) from December 8-12
→Venue pickup on December 13: 12:00 PM - 7:00 PM at Funatsuhama Parking Lot
→Race day pickup: 7:00 AM - 8:00 AM at the venue
What awards and recognition are provided?
Main Marathon:
→Overall awards: Top 6 men and Top 6 women
→Age group awards: Top 3 finishers in each 5-year age bracket
→Finisher medal and towel provided to all finishers
→Record certificates: Web-issued immediately after race (preliminary), official version issued later
Charity Fun Run:
→Timing is recorded but no competitive rankings or awards are given
→Finisher recognition provided
What special items do overseas participants receive?
Overseas participants in the main marathon receive an eco-friendly long-sleeve T-shirt that is P-FACTS certified and compostable, distinguishing it as an environmentally responsible finisher gift.
What facilities and amenities are available at the race?
→12 water stations positioned throughout the course
→Distance markers placed every 1 kilometer
→Changing rooms available at both start and finish areas
→Souvenir shop open from 7:00 AM to 4:00 PM on race day
→Large luggage tent available for an additional ¥500 fee (Japan residents)
What luggage storage options are available?
Japan Residents:
→Optional luggage storage: +¥100 fee
→Large luggage tent: +¥500 fee
Overseas Participants:
→Luggage storage included in registration fee
→Large luggage tent available for additional fee
What is the Charity Fun Run and how does it support conservation?
The Charity Fun Run is an approximately 11 km course held on the same day as the main marathon. All entry fees include a donation of ¥223 per participant to the Mt. Fuji World Cultural Heritage Conservation Fund. These funds support the preservation of Mt. Fuji's natural and cultural environment. The run is non-competitive with no rankings or awards, making it accessible to recreational participants and families.
What are the weather considerations for running in December in Fuji Kawaguchiko?
December temperatures in Fuji Kawaguchiko typically range from 0-10°C (32-50°F). Early morning hours may experience frost, so runners should prepare with appropriate cold-weather gear. Clear skies are common during this season, which may provide excellent visibility of Mt. Fuji, though conditions can be variable. Participants should dress in layers and consider wind chill factors, particularly around the lakes.
