Rules and Regulations

Race Regulations

Participants must read and follow the rules below. Failure to follow the rules will be dealt with strictly and may result in disqualification.

① Participants must follow the instructions of race officials and course marshals.

② If you drop out during the race due to physical problems or other reasons, be sure to notify race officials or course marshals.

③ Participants who race officials judge to be incapable of continuing the race will be forced to stop.

Grounds for Disqualification

  • Participants who show inadequate respect for the environment and area by dumping garbage, entering areas off the course or similar actions.
  • Participants who fail to comply with instructions from race officials or course marshals.
  • Participants who falsely declare their age or gender on their applications, or those who participate with another person’s bib number.
  • Participants who fail to clear checkpoint cutoff times or those who do not reach the finish line by the final time limit.
  • Participants who do not wear their bib number. Attach your bib number to your front without bending or otherwise manipulating it.
  • Participants who run with headphones or similar items that block external sound. Hearing aids excluded.

Grounds for Cancelation of Event

The race may be canceled in the event of a weather warning being issued, if the course is in poor condition due to extreme weather, or if participants’ safety cannot be guaranteed. Depending upon weather conditions, the race may also be delayed, rescheduled or the course changed if this will allow it to be staged safely.


During the Race

Aid Stations

There will be five aid stations (water supply stations) set up along the 68km course. Water, cola, bananas, pickled plums and other items will be available, but in addition please carry your own drinks and food as necessary. If you feel unwell or sustain an injury during the race, please inform aid station staff.


As some parts of the course have rough footing and slippery sections, we recommend wearing protective clothing, gloves and caps that minimize skin exposure. Please also bring rain gear to be prepared if the weather changes abruptly.

Dropping Out

If you drop out during the race for any reason, be sure to tell course marshals or aid station staff you name and bib number. If you are unable to do so at the time, please inform race headquarters as soon as possible. Please note that if we are unable to confirm participants’ locations we will be forced to stage a search for them.

Timing Chip Return

Your timing chip is attached to the rear side of your bib number. Please be sure to detach it and give it to race staff or put it in the chip return box after you finish. If you drop out partway through the race, be certain to bring your chip to race headquarters. Please note in advance that there will be a 4,000 yen charge for lost or unreturned timing chips.

Course Markings

Guide signs and guide tape (10cm-wide vinyl tape with a yellow Fields logo) are installed all along the course. Signs are placed at forks in the route and at hazardous points on the course. Tape is attached to tree branches and in other visible locations every 300 to 400m. If you lose sight of the guide tapes, return to the spot where you last saw it and proceed along the correct course. Course marshals will be at key locations such as intersections and road crossings, but following other course markings is the responsibility of the participant.


Please take special note of the race details below.

1) Course Preservation

  • Walking poles are permitted, but please attach rubber caps to the points. If we determine that the course is in poor condition we may prohibit use of walking poles and similar equipment to prevent further deterioration.
  • Do not throw trash on the ground at any time. Keep an eye out for lost items and please pick up any trash that others may have dropped.
  • Collecting or damaging plants or wildlife on the course and in the surrounding areas is strictly prohibited.
  • Entering private property and private residences is prohibited.

2) Consideration for Hikers, Local Residents, and Other Race Participants

  • Do not leave the course or enter any off-course areas. If you pass another participant, hiker or local resident, be sure to stay on the course as you pass.
  • You are likely to encounter hikers and local residents on the course. When passing them in either direction be sure to call out in advance and to exchange greetings to maintain good relations with the local community. When in doubt, give them the right of way.
  • Please remember that the race is able to take place thanks to the support of local residents and volunteers and show appropriate gratitude.

3) Safety Management

  • Because the entire course is in natural areas the situation is constantly changing. Pay attention to the circumstances around you as you run and do not force yourself into any difficult situations.
  • Weather conditions on the course are likely to change suddenly, and participants can expect to face rain, gusts of wind or other conditions that can cause hypothermia. Please make adequate preparations for such conditions in advance.
  • Medical staff will be on-hand at race headquarters to deal with first aid for injuries and illness. Rescue vehicles are also standing by at each aid station to transport injured participants and those who drop out.
  • If participants decide that they are not able to continue due to injury or illness, please contact the nearest race staff member or race headquarters. The appropriate telephone numbers are printed on participants’ bib numbers.
  • The race organizers have purchased accident insurance to cover participants’ accidents and injuries. The levels of compensation are as follows:

    In case of death or lasting disability: 3,000,000 yen
    Hospitalization (per day): 3,000 yen
    Outpatient treatment (per day): 2,000 yen

Pre-Race Check-In

Saturday, Dec. 16

Race-Day Check-In

Greetings, Last-Minute Notes
Award Ceremony
Closing of Competition

Click each parking lot location’s marker to see its address and availability times.
Check the star next to the “Boso Crossing Parking Lot Map” title to display the parking lot’s location on Google Maps on your smartphone.

By car:
Parking is available at both the start and finish areas.

By train:
Awa Kominato Station (by direct limited express from Tokyo Station)

Enter the 2017 Coast-to-Coast Boso Peninsula Crossing via the site below.

Entry Period

12:00 a.m., Saturday, July 29, 2017 to 23:59, Friday, Nov. 17, 2017. *Entry will be closed once the maximum field size is reached.

After downloading the pledge form, please print it out, read the contents, and sign or stamp it with your seal. Please submit the completed form at race check-in.