• In order to participate in this race, you must fully understand and agree to the following conditions and responsibilities.
    • You are required to abide by the municipal regulations and Japanese laws and are expected to conduct yourself in a responsible manner at all times during the race.
    • Mt.FUJI100 is a race that requires racers to run through mountainous terrain both during the day and at night. While the race organizer will try its best to minimize unforeseen risks, it is ultimately your responsibility to avoid any dangers and to ensure your own safety during the race. As such, you are expected to have the technical skills, knowledge, equipment, physical endurance, and self-management skills to deal with any issues that may arise during the race including severe weather conditions (e.g. low temperatures, strong winds, rain and snow). Your actions and any outcomes that may result are your responsibility. Also, in the outdoors, it is usually the racers who are closest to ones involved in an accident. All racers are expected to ensure the safety of fellow racers.

Weather Statistics: Yamanakako from April 26, 2016-2020

YAMANAKAKO (Altitude 992m)
Average Min/Max Average Min/Max Average Min/Max
0:00 0.3 0.0/1.0 8.3 2.7/13.8 0.7 0.0/2.2
3:00 0.4 0.0/1.5 7.9 0.9/13.6 1.1 0.0/4.1
6:00 1.7 0.0/8.5 7.3 -0.3/13.8 1.0 0.0/4.0
9:00 5.0 0.0/25.0 13.2 8.5/18.4 1.9 0.2/2.8
12:00 0.0 0.0/0.0 16.2 12.0/19.9 3.0 1.9/3.7
15:00 0.0 0.0/0.0 16.1 11.4/21.8 2.8 1.3/4.4
18:00 0.0 0.0/0.0 13.0 8.7/17.7 1.3 0.5/2.3
21:00 0.0 0.0/0.0 10.1 2.7/16.8 0.4 0.2/1.0

*Based on data from the Japan Meteorological Agency.
*A large portion of the race course is at an altitude of 500m - 1600m. The temperature is said to drop by 0.6℃ for every 100m increase in altitude. Every 1m/s of wind will also make you feel 1℃ colder.

  • The race course will be marked with marking tapes, signs, and guide posts. However, you are responsible for finding and following these course markings on your own and for staying on the race course. You are also responsible for finding your own way back using the course maps provided if you end up straying off the race course. If you are off route, do not call the HQ emergency phone unless it is an emergency. That phone call could prevent someone else from making a call they really need to make.
  • You are responsible for checking the official updates provided by the race organizer both before and during the race. Please follow the instructions provided.
  • You must always respect the environment and other people with whom we share the trails.
  • The race organizer will prepare the race course, equipment and where necessary, place staff along the course in order to properly carry out the race. The organizer will also provide emergency and medical support during the race.
  • All aid stations will have an emergency medical tent where there will be a doctor and/or nurse on standby to provide medical assistance. Please note that only emergency first-aid can be provided at these tents.



This section outlines the rules and regulations put forth by the race. Please read through this section carefully. If you do not abide by these rules, you may be immediately disqualified or have a penalty of 1, 3 or 6 hours added to your race time. Participation in future races may also be denied.


The FUJI course is located in a precious natural environment with areas designated as Fuji-Hakone-Izu National Park and areas inhabited by rare plants and animals.

The following rules have been established to ensure that the irreplaceable forest ecosystems are not adversely affected. Please fully understand the main purpose of the event and strictly adhere to the following rule

  • The use of trekking poles is prohibited on the entire course. Picking up and using tree branches as trekking poles is also not allowed.
  • Sleeping along the course is prohibited. This is because it will have a large impact on the environment and may also mistakenly lead others to think that you require emergency medical assistance.
  • You must stay on the trail at all times. Do not step off the trail to shortcut corners. There will also be several “no passing” sections in environmentally restricted areas where you will not be allowed to pass each other.
  • Picking up or damaging plants, animals, fungi, and rocks found along the race course as well as within the overall race area are prohibited.
  • Never throw garbage along the course.
  • Please use the toilets located at each aid station. Also, please carry and use a portable/disposable toilet and use it if you are unable to wait. Do not throw away toilet paper or used portable/disposable toilets along the trails. All toilet paper or used portable/disposable toilets must be carried home with you.
  • Please wash the soles of your shoes to clean off any dirt/seeds/vegetation before the start of the race. This is to prevent the spread of invasive species/non-native seeds and to prevent vegetation from urban areas from being carried up into the environmentally sensitive mountain regions. For the same reason, mats for cleaning shoe soles will be placed at several trailheads along the course. Follow the instruction of staff members and remove dirt/seeds/vegetation from the bottom of your shoes using brushes provided there.
  • During the race, even there may be no problems in terms of racer safety, if the trails are determined not to be able to withstand the use of many racers at once, a walking section may be established, the course may be changed, or the race may be cancelled.


  • If during the race, you encounter another racer or staff member who is injured or sick and unable to move on their own, please give priority to assisting that person and call race headquarters for emergency assistance. The emergency telephone number will be written on your race bib. Also, when contacting headquarters, please confirm the racer's number and give it to them whenever possible. If you do not know the racer number, please check the gender and the color of the clothing. This is to facilitate a smooth response by the headquarters.
  • If you come across a racer who is lying down or hunched over along the course, please check to see if he/she is alright. If the person requires emergency assistance, please give priority to helping that person by calling race headquarters for assistance.
  • The race course is not on private property owned by the race and will not be closed off to the general public. The trails must be shared with the general public such as hikers at all times. There will be “no passing sections” set up along the race course where you will be prohibited from passing other both racers and hikers. In areas where passing is allowed, please do so in a safe place where the trail is wide. Please be considerate and slow down and walk when passing other people. Remember to call out to the person such as saying hello to let your presence be known. Similar principles apply in urban areas. Always use sidewalks on streets with sidewalks.
  • Please be careful not to damage property located along the race course.
  • Parts of the race course passes through privately-owned lands that are normally prohibited from entry. When you are in these special sections, please make sure you stay within the specified boundaries.
  • The course also passes through residential areas. Please do not make loud noises or sounds when passing through these areas. Also put away your bear bells and prevent them from ringing when passing through “no-bear bells” sections.


Doctors and rescue staff have the authority to stop a racer from continuing the race if he/she believes the racer is unfit to safely continue the race. If you are told to stop by a race physician or rescuer, you will be required to follow the instruction. In such case, your race bib may be marked to show that you have dropped out of the race.


  • Racers are kept track of using IC chips and sensor mats. The race organizer will be tracking racer times, number of racers out on the course as well as whether or not you've entered/left aid stations and checkpoints.

    *In principle, racers cannot withdraw from the race at F7/K3 Nijumagari.

  • You must always have an IC chip attached to each of your shoes (both the right foot and left foot).
  • Please hand-in your IC chips when you finish racing.
  • If you are disqualified or decide to drop out of the race, please return your IC chips at the aid station.


  • There will be two separate cutoff times at each aid station - one at the entrance and one at the exit. This is a measure put in place to ensure the safety of racers coming into the aid station close to the entrance cutoff time. You will not be allowed to continue the race if you don't make either of these cutoff times (entering and leaving the gate).
  • You can re-enter an aid station after leaving as long as it is before the entry cutoff time. Be sure to use a dedicated route when returning an aid station and leaving the aid station. Also, be sure to notify aid station staff that you are returning and leaving. In such case, you will be disqualified if you fail to leave the aid station before the exit cutoff time.
  • Cutoff times may be changed depending on weather and course conditions. Changes will be announced on the official bulletin boards at the aid stations and a text message will be sent via SMS etc. to the phone number you've provided.


  • Permission has been obtained from the appropriate land owners and property managers to put up temporary signs and marking tapes. The race course will be marked using marking tapes and signs. Marking tapes will be placed approximately every 100 meters along the course and extra markings will be placed in sections where it may be easy to get lost. If you do not see a marking tape after proceeding for over 200 meters, it means you've gone off the course. Please turn back and return to the race course.
  • The race organizer will be putting forth its best effort to minimize any unforeseen risks along the course. Dangerous areas will be marked with signs and ropes in order to reduce risk. Please follow all instructions provided. Where deemed necessary, staff and security guards will also be positioned along the course to ensure racer safety and direct the flow of traffic.
  • There will be staff and security guards standing along the course to help direct the way, however it is your responsibility to follow the course markers and signs to stay on the correct route.
  • There will be a “no-passing” section as well as other sections with specific rules and conditions. Please abide by these rules.
  • Once the race starts, any information that needs to be communicated to the racers will be posted up on the official bulletin boards at the aid stations and water stations. Important information will also be sent to you via SMS text message to the phone number you've provided to the race. It is the racer's responsibility to check the official bulletin boards at the aid and water stations as well as your SMS messages.
MARKING TAPE(Planned design change)
SIGNS(Planned design change)


  • If you feel that you can no longer continue and decide to drop out of the race, you must notify the measurement staff at the aid station.
  • Retire on the course
    You may only drop out of the race along the race course ONLY if it is an emergency and/or you are injured or become sick and cannot move on your own.
    In such a case, please contact the emergency headquarters immediately for assistance.
  • If it is difficult to move on your own and you are unable to contact the emergency headquarters, please stay on the course, making sure you are clearly visible from the people on the course. As long as you stay on the course, it is likely that sweepers or other racers will find you. It is the last resort to assure your safety


The weight of your equipment must be a minimum of two kilograms at the start of the race and upon leaving each aid station. Your equipment must weigh a minimum of one kilogram at all times along the race course. Racers may be asked to go through an equipment check during the race. If you do not have your required equipment, you may be disqualified from the race. It is your own responsibility to decide whether your required clothing/gear provides adequate warmth and rain protection during the race. The race organizer will regard clothing/gear selected and registered by racers as the required equipment of the racer.

The following is a list of required equipment:
Required equipment (must be carried by racers during the race)

  • A map with detailed race course information, available for your reference whenever needed (*1)
  • Mobile phone reachable by the number registered upon racer entry. Be sure to register the telephone number of the emergency headquarters (printed on the race bib) on your phone prior to the race avoid blocking this number. Fully charge your phone so that you can receive an emergency contact from the race organizer via SMS.
  • Personal cup for drinking (minimum 150 cc size) Paper cups will not be provided at the aid stations.
  • Water You must carry a minimum of one liter of water at the start and upon leaving each aid .
  • Food
  • Two lights with replacement batteries and/or portable power chargers. Remember that battery life will decline in cold temperatures.
  • Flashing reflector light (red or orange recommended) Put this light on your backpack during the race so that cars will be able to clearly see you at night.
  • Survival blanket (minimum size of 130 cm x 200 cm) or emergency bivvy
  • Whistle
  • Adhesive elastic tape/band (minimum length of 80 cm × 3 cm) (*2)
  • Portable/disposable toilet (*3)
  • Rain jacket with hood and rain pants in case of rain Both must be made of waterproof and breathable membrane such as Gore-Tex or something similar with waterproof seam sealing.
  • Warm fleece or long sleeve shirt Cotton not allowed. (*4)
  • Warm pants or tights that go down to your ankles, or a combination of tights that cover your knees and high socks. No cotton allowed. (*5)
  • Warm gloves/mittens and warm hat that covers your ears (*6)
  • First aid kit (such as band aids, disinfectant, etc.)
  • Overseas travel/accident insurance policy (no copy: must be original document) The My Number Card linked to your health insurance card is accepted as a must-have item.
  • Race bib and IC Chips (these will be given to you at the race)
  • Backpack to carry all your required equipment and other items recommended below
  • *1: Starting from the 2024 race, you can download map data to your mobile phone. However, ensure that you can refer to the map while speaking with the race headquarters in case of an emergency.
  • *2:  Durable tapes that can be used for multiple purposes, including providing emergency care for injuries like sprains and fractures, as well as repairing gear such as a broken strap on your backpack.
  • *3: If you use yours during the race, replacements are available at the aid stations.
  • *4: Warm clothing for the upper body means mid-layer clothing such as fleece jackets, wool sweaters and light-weight down jackets that create a layer of warm air between your skin and the fabric. A thin underwear is not allowed.
  • *5: Warm clothing for the lower body means, A. Full-length pants that go down to your ankles. B. Full-length tights that go down to your ankles. C. Short-length tights combined with long-length socks so that your leg is completely covered.
  • *6: Wool or polyester knit hat that provides warmth
  • *7. Wearing a face mask is required at the start area and aid stations (except when eating or drinking). Wearing a face mask is not required during the race other than in the above areas.
  • *The required equipment list provided here is only the minimum gears that you may need. You will be running in harsh conditions for two days and one night so please make sure that you are well-prepared to manage your own safety and well-being and bring additional gear you need to protect yourself.
  • *We will strive to dispatch a rescue team to reach a racer who needs assistance due to extreme fatigue or injury on the course within three hours from receiving a call. However, it may take much more time if we receive several rescue requests all at once, or if you've strayed off the race course or if the weather conditions are bad. In such cases, it could take more than six hours to reach you. Given this, please bring enough clothing and equipment with you to protect yourself from the cold wind and rain for more than six hours.


The required equipment list is not necessarily enough for all racers. What you need differs depending on your skill, physical level, weather during the race, etc. It is up to you to determine what is necessary for you and it is your responsibility to bring additional gear that you will need to safely complete the race. Make sure you've tested all of your gear under sub-zero conditions up in the mountains, in heavy rain and over long runs so that you know for sure that your gears are sufficient to protect you.
The following is a list of strongly recommended equipment.

The following is a list of strongly recommended equipment.

  • Shoes That cover the entire foot 
  • Compass
  • Bear bell (*1)
  • Change of clothes
  • Cash
  • *1 The bear bell is a very unpleasant noise for neighborhood both in day and night. There will be “no bear bell” signs posted before you enter residential areas. You must put away your bear bell (stop your bear bell from ringing) when running through residential and town areas both during the day and at night.


If you put your bib on incorrectly, you could be disqualified.

  • Incorrectly worn number cards may result in disqualification.
  • Each number card (bib) should be attached to the front and one to the back of the upper body, using a safety pin or bib belt, so that it is clearly visible and not hidden by clothing.
  • Do not attach the number cards (bibs) on the lower body such as on trunks, tights, pants, etc.
  • Do not fold the corners of the number cards (bibs) to make them smaller.



*For FUJI100mi only

  • At the F4 Fuji Hokuroku Park in the middle of the race, racers can pick up luggage (Drop Bag) they checked in before the start.
  • You can also leave items you no will longer need in your Drop Bag there.
  • Drop Bags are placed at F4 Fuji Hokuroku Park, regardless of whether you will use it or not. Please collect your Drop Bag by yourself after the race.


  • The only type of earphones, earbuds, and headphones allowed during the race is the open-ear type.
  • You are not allowed to engage in prohibited actions such as using transportation means other than by foot, using a substitute racer, and other actions that violate laws or ordinances.


The race organizer is responsible for any non-deliberate damage by race participants to property along the race course (e.g. plants and animals, objects. trails, etc.)


The race organizer does not hold any responsibility for the COVID-19 infection to any person involved in this race.


  • The use of personal support and the nap area is not allowed for the KAI70k racers.
  • FUJI100mi racers can only receive personal support. For detailed rules, please check Rules for Supporters.
  • Food and drinks will be provided at the aid stations. (Some aids only provide beverages.)
  • Racers must pick up food and beverages provided at the aid station on their own. To reduce the risk of spreading COVID-19, racers must follow instructions of the aid station staff in regards to the handling of food and beverages.
  • Do not dispose of leftover drink or food outside of the designated trash bins (e.g. on the course).
  • Some of the aid stations prohibit the use of camping stoves/fire.
  • Spectators must not shout or make loud noises when cheering on racers when close to towns and residential areas as this may cause discomfort to the local residents.
  • Racers can use the vending machines and stores located along the race course. However, racers must not go off the race course deliberately.


The ULTRA-TRAIL Mt.FUJI declares to accept and follow all the rules of the World Anti-Doping Code published by the World Anti-Doping Agency (WADA).

Each participants are assumed to agree to the following:

Each racer accepts all the rules of the World Anti-Doping Code published by WADA and more specifically those relating to athletes.
World Anti-Doping Code – International Standard (Japan Anti-Doping Agency)

Notes and other information about the race

1. For videos, photos, articles, records, etc. of the race

  • The racer organizer may publish videos, photos, articles, and records of the racers, supporters, and spectators on television shows, newspapers, magazines, and the Internet.
  • Videos, photos, articles, and records of the race are protected by copyright laws, etc., and may not be used (including broadcast, publication, and Internet distribution) without the organizer's permission.
    However, personal use of videos and photos taken by racers and supporters themselves is permitted.
  • The ULTRA-TRAIL Mt.FUJI2022 is scheduled to apply for the International Trail Running Race Association (ITRA). Official results of the ULTRA-TRAIL Mt.FUJI will be submitted and shared with ITRA respectively.

2. Environmental Protection Rules

In order to reduce energy consumption and lower carbon dioxide emissions, we highly recommend that you use public transportation or carpool when coming to the race area.


Remember to thank the people, locals, and volunteers who support the race.


  • In case a rescue is needed on the course, rescue staff are on standby to arrive on site within three hours from receiving the call. However, if there are multiple rescue requests, if the rescue requests are coming from far away from the course, or if the rescue location cannot be identified, it may take more than six hours for the rescue staff to arrive at the site.
  • Many of the past calls to the emergency headquarters were not urgent or rescue calls. For example, a racer called the emergency headquarters to request a pick up by a car because he would not be able to make a cutoff time (this of course would result in disqualification). We declined all of them, but such calls will take up the time of the rescue staff, and keep the phone line busy, meaning that it will delay the rescue actions for someone who really needs rescuing. When calling the emergency headquarters, please think twice before doing so to determine if you really need rescue.
  • When calling the emergency headquarters, have a map handy so that you can correctly describe where you are at.
  • The point numbers (e.g. B05) shown on the detailed map are also shown on signs on the course. Please use this number to describe your location when requesting rescue, so our staff can respond smoothly.
  • If the organizer deems it necessary, a rescue team outside of the race organization may be called. In this case, the cost incurred will be borne by the rescued person.
  • If the physician or staff deems it necessary, a racer may be transported to a hospital. Medical expenses in such cases are to be borne by the racer. Racers are responsible for their own transportation from the hospital to the finish line or home. The cost of this will also be borne by the racers.
  • Racers who are picked up by a vehicle on the course and do not require hospital transport will be taken to a nearby aid station at the discretion of the organizer. Please return the IC chip to the measurement staff there as it will be considered as a drop out or disqualification.
  • The organizer has liability and athlete accident insurance and tournament cancellation insurance, but we recommend that all athletes have insurance.

The organizer's accident insurance coverage is as follows:

  • – Death, disability: 3 million yen
  • – Hospitalization (daily rate): 3,000 yen
  • – Outpatient care (daily): 2,000 yen


  • Course guide tapes and signs will be installed just before the race and removed immediately after the race.
  • Please use Detailed Course Map, which is a required gear, so that you can quickly return to the course if you run off course.
  • Please read Detailed Course Map carefully and fully understand the course beforehand.


The organizer may cancel or suspend the race if it is deemed difficult to hold or continue the race for any of the following reasons: There will be no postponement of the race such as to the following week.

  • When a weather warning is issued;
  • When a landslide or rock fall occurs on the course and makes it impossible to ensure the safety of racers and staff members;
  • When a natural disaster occurs; E.g. When Explanatory Information on Tokai Earthquake Warning/Warning Declaration or Tokai Earthquake Watch is issued
  • When there is a possibility of damaging the natural environment due to the passage of racers under stormy weather; and
  • When the organizer decides that the race should be canceled for any other reasons.
  • The decision to cancel or suspend the race will be announced on the official website or dedicated websites (PC or mobile phones) on or before the day of the race. If the announcement of cancellation is to be made on the start date, it will also be sent by SMS to each racer's registered mobile phone number.

7. Survey on the impact of the race on nature

There will be course maintenance and cleanup events before and after the race. Although it is not mandatory for racers to participate, we hope that many will, given the meaning of the race.

The information on our environmental activities can be viewed at the following address
NPO Fuji Trail Runners Club - Environmental activity report

In accordance with the Ministry of the Environment's guidelines, etc., we will continue to survey the impact of the ULTRA-TRAIL Mt.FUJI on nature, and publish the results on the official website.

8. Survey on the impact of the race on nature

  • Please be aware that there are no entry fee refunds (full or partial) for whatever the reason once you've registered for the race. There are no entry fee refunds (full or partial).
  • Your registration will become invalid and canceled if we receive your payment after the payment deadline. In this case, your payment will be returned to you minus the designated processing fee.
  • The transfer of the right to participate in the race to another person is NOT allowed.

9. After the race

  • Changing rooms will be available at the finish area, but please refrain from taking a nap there so that many people can use the changing rooms.
  • Please be sure to reserve an accommodation for the entire race period so that you do not have to worry about where to stay after finishing, dropping out, or being disqualified.
  • In the event of race cancellation (disqualification or drop-out), racers may return to the finish line from the spot using the pick-up buses or support vehicles. If you use a cab or bus, you will be responsible for the expense.
  • Drop Bags will be carried to F4 Fuji Hokuroku Park  for racers to pick up after the race. Drop Bags will be returned after the aid gate closes, and you will need to show your number card to pick up your Drop Bag. Please do not throw away your number card until then.