How many hikes should I do before stepping up?

It's less about the number and more about confidence. If you can comfortably hike low mountains while being aware of weather and time, you're ready. Typically 3–5 hikes at the beginner level is enough.

I'm not confident about weather judgment yet.

Start by only hiking on days rated 'A' on Tenki to Kurasu. As you gain experience, you'll naturally learn to read clouds, wind, and other weather signs.

How do I know when to turn back?

Consider turning back if you're more than 30 minutes behind schedule, weather suddenly deteriorates, or anyone in your group feels unwell. When in doubt, always turn back.

Step-Up Guide — Level Up Your Hiking Skills

Ready for More, But Not Sure How?

You’ve enjoyed Mt. Takao and Mt. Mitake. You know the basics. But stepping up to higher mountains with longer trails feels daunting — this guide is for you.

Here are the five skills you need to move from beginner trails to intermediate mountains. This guide assumes you have Lv.2 gear ready.

Skill 1: Advanced Weather Judgment

In the First Hike Guide, we said “only hike on clear days.” Now it’s time to read weather more precisely.

Using Tenki to Kurasu

“Tenki to Kurasu” is a mountain-specific weather service in Japan.

Hiking Index	Meaning	Decision
A (Good)	Low wind, no rain expected	✅ Safe to go
B (Caution)	Moderate wind or possible afternoon rain	⚠️ Go with early start, finish by noon
C (Unsuitable)	Strong wind or high rain probability	❌ Cancel

Three Key Factors to Check

Wind speed: Above 10 m/s at the summit means wind chill drops temperature by 10°C+. Above 15 m/s makes hiking dangerous
Rain timing: Afternoon rain? Finish before noon. Morning rain? Cancel
Temperature: Temperature drops about 0.6°C per 100m of elevation. Calculate summit temperature in advance

Reading Weather Changes on the Trail

Cumulonimbus clouds building: Thunderstorm approaching — begin descent immediately
Sudden cold wind: Sign of a weather front passing through
Fog rolling in: Visibility drops and route-finding becomes difficult. Check your map frequently

💡 Weather judgment improves with experience. Make it a habit to observe the sky on every hike and compare forecasts with actual conditions.

Skill 2: Mastering the Layering System

As elevation increases, temperature swings get dramatic. Multiple thin layers beat one thick jacket.

The 3-Layer System

Layer	Purpose	Recommended	Budget Alternative
Base layer (underwear)	Wick sweat away	Merino wool	Uniqlo AIRism
Mid layer (insulation)	Trap warmth	Fleece	Uniqlo fleece
Outer layer (shell)	Block wind and rain	Rain gear	—

When to Add and Remove Layers

Starting out: Begin slightly cool (you’ll warm up fast)
Climbing: Remove mid layer when hot. Base + outer is fine
Rest stops: Put mid layer back on immediately (prevent sweat chill)
Summit: Add outer layer too — wind is strongest here
Descent: Body cools faster going down. Adjust frequently

The Danger of Sweat Chill

After sweating heavily on the climb, wind at the summit rapidly drops your body temperature. This is sweat chill — the gateway to hypothermia.

Prevention:

Never wear cotton (absorbs sweat and won’t dry)
Wear quick-dry base layers
Carry a spare base layer (for heavy sweat days)
Layer up immediately at rest stops

Skill 3: Time Management and Turning Back

Longer trails mean higher stakes when timing goes wrong. Time management is a safety skill.

Time Management Basics

Create a timetable before departure

Example: Mt. Oyama

08:00  Depart Oyama Cable Station
09:30  Summit (30-min break) → ★Checkpoint 1
10:00  Begin descent
11:30  Arrive at Shimosha → ★Checkpoint 2
12:00  Hike complete

Delay limit: If Checkpoint 1 not reached by 10:30, turn back

Set checkpoints: Summits, trail junctions, and key landmarks
Define delay limits: “If I’m not here by this time, I turn around” — decide before you start

Five Signs You Should Turn Back

Sign	Response
More than 30 minutes behind schedule	Consider turning back. Don’t fixate on the summit
Sudden weather change (thunder, strong wind, fog)	Descend to safety. Move away from ridgelines in lightning
Feeling unwell (headache, nausea, extreme fatigue)	Descend immediately. Have a companion if possible
Any group member reports feeling bad	Entire group turns back. Never leave someone behind
Past 2 PM (1 PM in winter)	Prioritize getting off the mountain

💡 “But we came all this way” is the most dangerous phrase in hiking. You’ll never regret turning back. You might regret not doing so.

Low mountains were “follow the path.” Intermediate mountains have more junctions and less-obvious trails.

Level Up Your App Skills

YAMAP / Yamareco: Create a hiking plan before departure and enable GPS logging
Offline maps: Download maps for your area before you go (cell signal is unreliable)
Position checks: Build a habit of verifying your location at every junction
Battery saving: Use airplane mode with GPS enabled to extend battery life

Reading Paper Maps

If your phone breaks or dies, a paper map is your backup.

Contour lines: Close together = steep; spread apart = gentle
Course times: Standard walking time between junctions
Magnetic north line: Used with compass for orientation
Map symbols: Water sources, mountain huts, danger zones

If You Get Lost

Retrace your steps (most reliable option)
Head uphill to a ridge (going downhill into valleys can lead to cliffs or waterfalls)
Check your position on your phone
Call 110 if you can’t move (tell them “I’m stuck on a mountain” and they’ll help)

Skill 5: Hiking Plans and Emergency Preparedness

For intermediate mountains, filing a hiking plan is mandatory, not optional.

Detailed Hiking Plan

Route: Specify ascent and descent routes separately (out-and-back vs. loop)
Escape routes: Alternative paths to descend in case of weather or health issues
Timetable: Expected arrival time at each checkpoint
Phone number: Your most important emergency contact info

Emergency Contacts

Situation	Contact
Injury / Lost	110 (Police) or 119 (Fire/Ambulance)
Lost but mobile	First try retracing steps. If unable, call 110
Stranded by weather	Find shelter from wind/rain. Report situation via 110

Hiking Insurance

Mountain rescue costs in Japan can be your responsibility (helicopter rescue can cost millions of yen).

YAMAP: Membership includes search and rescue coverage
jRO (Japan Mountain Rescue Organization): ¥2,200/year for rescue cost coverage
Mountain insurance: Available from Montbell and other companies. Day-trip to multi-day options

💡 Hiking insurance isn’t a luxury — it’s a necessity. Especially for intermediate mountains and above, enrollment is strongly recommended.

Recommended Step-Up Mountains

Ready to graduate from beginner trails? Try these:

Mountain	Difficulty	Elevation	Features
Mt. Oyama	★★☆☆☆	1,252m	Good bus access. Outstanding panoramic views
Mt. Tsukuba	★★☆☆☆	877m	Ropeway available. Sweeping views of the Kanto Plain
Mt. Kintoki	★★☆☆☆	1,212m	Iconic Mt. Fuji viewpoint. Famous summit tea house

Summary

Five skills for stepping up:

Weather judgment — Use Tenki to Kurasu and read the sky on-trail
Layering — Three-layer system with frequent adjustments
Time management — Set checkpoints and delay limits
Navigation — App + paper map as double backup
Hiking plan + insurance — Emergency preparedness is non-negotiable

Next Steps

Gear Guide Lv.2–3 — Upgrade your equipment for bigger mountains
Intermediate Mountain Guide — Preparing for 1,000m+ peaks
Hiking Essentials & Safety — Complete gear and safety reference