Japan Sea to Summit

The very nature of adventure means that the unexpected can sometimes become part of the journey and that is all part of the experience. While we will always strive to deliver “Plan A”, there may be occasions where operational, safety, weather or environmental factors require us to adapt plans and implement contingency routes or alternative arrangements.

As with all Rat Race adventures, participant safety and overall event delivery remain our highest priorities. We therefore reserve the right to amend routes, itineraries or logistics where necessary, using the experience and judgement of our expedition team to make the best decisions on your behalf in changing conditions. Wherever possible, we will communicate any changes in advance. More often than not, these unexpected moments become part of the adventure itself adding to the stories, memories and unique character of the experience.

Click 'Enter' and sign into your Rat Race account and follow the sign up procedure. If you need any assistance please drop the customer service team an email on events@ratrace.com

Rat Race require you to be over 18 on the day of Registration for this adventure.

If you find yourself unable to join us on the start line of this event, you are able to transfer your entry into an event credit voucher once for use on a new entry into an event of your choice. Transfers must be requested within the qualifying transfer window to be accepted and processed. Credit vouchers are valid for 12 months from the date of issue. Credit vouchers are exempt from the transfer process. To find out more information and how to submit a request, view of full transfer policy HERE 

You are very welcome to fundraise for any charity close to your heart while taking part in the event. Please note, however, that our Charity Refund Offer applies exclusively to participants fundraising for Children with Cancer UK.

You can view our current volunteer positions here. 

Add Refund Protect to your booking during purchase and receive a full refund of your entry fee if you are unable to attend the event due to a qualifying unforeseen circumstance. PLEASE NOTE this protection is with our 3rd party partner Refund Protect and NOT Rat Race. In the event you make a refund application this is administered by the Refund Protect customer service team, Rat Race are not privy to the application and cannot intervene on your behalf to influence the outcome determined by their team.

To add Refund Protect (administered by a 3rd party) to your Rat Race booking simply select this option when presented during the entry process. Refund Protect cannot be added retrospectively. Rat Race will then send you name and booking details to Refund Protect in order to protect your transaction with them. If you opt to pay in instalments and transfer your entry before the entry cost is full paid you will be liable to ensure the cost of Refund Protect has been fully covered. This total amount will be deducted from any Rat Race credit due through the transfer process or you will be invoiced by Rat Race for the outstanding amount as Rat Race have paid this on your behalf to Refund Protect at point of entry. 

Yes. Comprehensive travel insurance is compulsory for this event and must cover both general travel and participation in the outdoor endurance activities included within the itinerary. You will also require Evacuation Insurance, which covers emergency extraction and onward medical transport by helicopter or similar should urgent assistance be required in this remote environment.

We strongly recommend arranging your insurance as soon as you enter the event and booking flexible flight options where possible to allow for any unexpected changes. Please ensure your chosen policy specifically covers the activities you will be undertaking during the expedition. There are a number of specialist adventure travel insurers available, including Mann Broadbent.

This is our planned kit list for Japan, additional items may be added but these will be communicated to you in our EEI document (3 months prior to the event). 

Running/Trekking kit 

• Ultra Running rucksack/hiking backpack or other appropriate method of carrying your kit. BUY HERE 

• Satellite Tracker: given to you at the event briefing. This should be put in the lid/outer pocket of your rucksack. Remember this must be returned at the end of the event. 

• Light trail Running Shoes: i.e. running shoes with some grip 

• Hydration Bladder or Bottle(s) with a minimum of 2 litre capacity. BUY HERE 

• Snacks – Min 1000kcal per day. 

• Puffer Jacket

• Warm Beanie hat

• Waterproof Jacket with TAPED or WELDED SEAMS as a minimum standard. BUY HERE 

• Waterproof Trousers with TAPED or WELDED SEAMS as a minimum standard. BUY HERE 

• Hat suitable to the conditions (a Rat Rag is OK). BUY HERE 

• Gloves (lightweight running gloves are OK). BUY HERE 

• Bivvi Bag (NOT a blanket): Essential for unplanned stops. BUY ONE HERE 

• Basic First Aid Kit  containing at least: 
  – A conformable roller bandage. 
  – Assorted adhesive dressings. 
  – Separate sterile absorbent material 
  (e.g. gauze or gauze bandage) suitable for compressing bleeding wounds 

• Whistle: Effective for getting attention in an emergency. BUY ONE HERE 

• Fully charged mobile phone. 

• Hand Sanitiser 

• Reusable cup suitable for hot drinks. BUY ONE HERE 

It is a chunky day out as we go from sea level to 3776m over steep mountainous terrain, you should be a competent runner or a keen hiker.