Racers are recommended to subscribe to our free emergency SMS updates (via text message sent to your cell phone). These messages will be sent to racers to provide updates about changes to the course, cut off times, etc. during emergency situations. Please submit your name, email address, date of birth and cell phone number through the form below.

Note: SMS messages will be sent to the phone number you provided when registering for the race. You only have to fill in this form if the number you provided needs to be changed.

If you plan to rent a cell phone or purchase a SIM card in Japan, please click on the link below to submit your cell phone information if available. All supporters and spectators can subscribe to this service as well.

The form will be available until April 24, 2018 at 23:59. After this, please tell staff at racer check-in if you need to make any changes.

SMS Emergency Telephone Number Submission Form: