If you couldn't move on a mountain right now, how many people know where you actually are? You might have told family "I'm going hiking," but how many of them know which trailhead you started from and which route you planned? In Japan, the climbing plan (tozan-todoke) is the last information line connecting you to rescue if something goes wrong. This guide covers what it is, what to write on it, where to file it, and — the underrated part — why you actually should.
What a climbing plan actually is — the real meaning of "filing"
A tozan-todoke is a written notice filed in advance: who is climbing what mountain, by what route, when. It is also called a tozan keikaku-sho (climbing plan) or a nyūzan-todoke (entry notice); the name varies by region, but the function is the same.
The misconception beginners run into is this: a climbing plan is not a permit application. It is a notice, not a request for permission. Nobody is going to read it and approve or reject your climb. So what is it for? It is the starting information for a search-and-rescue operation if you go missing.
On the ground, the presence or absence of a filed plan dramatically affects how fast a search can begin. Which trailhead, what route, what time were you due back — those three pieces of information narrow the search area down enormously. Without a filed plan, rescuers don't even know where in a huge mountain range to start looking.
According to Japan's National Police Agency mountain-accident statistics, the share of missing-hiker cases without a filed plan remains substantial, and the time to find the hiker tends to be longer than in cases where a plan was on file. A climbing plan is, in plain terms, insurance for yourself.
How to write the plan — what goes on it
There is no nationally mandated single form, but the standard fields are essentially the same across regions:
- Filer's name, address, contact: used to contact family in an emergency.
- Emergency contact: a family member or friend other than the hiker themselves.
- Entry date and planned exit date: these are what triggers a search if you're overdue.
- Entry and exit trailheads: one of the single most important pieces of information for defining a search area.
- Planned route with time markers: if rescuers know roughly where you should have been at what time, they can estimate where things probably went wrong.
- Party composition: solo or group; number of people; contact for each member.
- Summary of gear: whether you have a tent or emergency bivouac shelter, days of food — this informs survival estimates.
The framing that makes the plan useful is: "if I disappeared, could a stranger start a search from this one piece of paper?" Write the route concretely — "<trailhead> → <junction A> → <summit> → <junction A> → <trailhead>" — not as a vague description.
Course times and similar numbers are general references. Real timings shift with weather, your condition that day, and snow on the route. Build margin into the plan.
A small tip
If it's your first time writing one and you're not sure where to start, use the templates published by the prefectural police websites or by online filing services. Filling in the blanks naturally gives you the structure.
Where to file it — more options than you'd think
"Where do I even submit this thing?" is one of the first walls beginners hit. There are actually several routes.
Trailhead drop boxes are the classic option. Major trailheads usually have a dedicated box, and blank forms are often left there too. Not every trailhead has one, so check ahead.
Mailing, faxing, or emailing the prefectural police headquarters is supported in many regions. The benefit is obvious — you can file from home before you leave.
Increasingly, online filing is also available. Web services let you fill in the form online and submit it from your phone — about as friction-free as this can get.
In some regions, filing is mandatory
Worth knowing: filing a climbing plan is legally required for designated mountain areas in some prefectures. Nagano, Gunma, Gifu, Toyama and others have local ordinances requiring registration before entry into specified ranges. In some cases, failure to file carries a penalty.
Which mountains are covered, and the details of the rules, vary by prefecture. Check the current official information for the specific prefecture and area before you go.
Summary — filing the plan is part of coming home
A climbing plan isn't paperwork. It is the act of writing down your intention to come back. A useful side effect is that writing it forces you to think your route and timing through, which sharpens the plan itself.
To recap. A climbing plan is information that accelerates search-and-rescue if something goes wrong — not a permit application. The fields that matter are "who, when, where, how." There are several filing routes — trailhead box, mail, online. And in some specified regions, filing is legally mandatory.
A few minutes of preparation today can take hours off a rescue tomorrow. From your next hike, treat filing the plan as a default part of getting ready.