शिखर · Every Indian state · trek-safety intelligence

Where the air grows thin 
and the trail grows quiet, 
that is where you meet yourself. 

Trail-map apps show you the way up. None tell you whether your body can keep pace with the altitude. Shikhar grades your itinerary against mountain-medicine rules, clears the permit maze, and reads the weather at your sleeping altitude — the numbers that keep trekkers alive.

Grade my itinerary
Explore treks
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graded treks
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states & territories
0 m
highest graded point
0 km
of staged trail, timed
01The physics

The air up there,
computed live.

Drag the slider — oxygen and SpO₂ come from West's barometric equation and the Severinghaus dissociation curve. The same physics runs under every screen in Shikhar.

Interactive
4,020mVery high altitude
Oxygen vs sea level60%
Est. SpO₂ (first exposure)84%

AMS common; HAPE/HACE possible. Sleeping-gain limits are critical.

6k
5k
4k
3k
2k
1k
84% SpO₂
02Discover

Where do you want to go?

Four regions, one grading standard. Every trek carries the same honest numbers — sleeping altitude, permits, and an AMS profile.

0 treks

The Himalaya

High passes, alpine lakes and the treks where acclimatisation decides everything.

0 treks

Heartland & islands

Sacred hills, canyon walks and forest plateaus — one honest trek in every state.

01

Pick a trek

93 treks across every Indian state — real photos, honest grades re-derived from the numbers, and the permits you'll actually need.

02

Grade your itinerary

The AMS engine checks every night's sleeping altitude against mountain-medicine rules — and re-profiles risky plans into the safe zone.

03

Walk prepared

Stage-by-stage trail path with computed times, elevation-aware weather, a printable safety report and an offline SOS card.

03The library

From gentle ridge to serious altitude

Browse all 93 treks →
DifficultAMS severe

Rumtse to Tso Moriri

Ladakh · 5,435 m · 9 days
ModerateAMS low

Devkund Waterfall

Maharashtra · 220 m · 1 days
EasyAMS low

Dzükou Valley

Nagaland · 2,452 m · 3 days
The core idea

Keep scrolling.
Watch the rules break.

Every 500 m of sleeping gain above 3000 m, every missing rest day, every oversized summit push — the engine catches what the brochure won’t say.

Risk score
0/ 100
high
Roopkund · night-by-night sleeping altitude
2350
2450
⚠ 500 m/night limit
3350
⚠ 1000 m rest rule
3800
⚠ 1000 m rest rule
4100
⚠ 1000 m rest rule⚠ Rest cadence
3800
Lohajung
Didna
Ali Bugyal
Patar Nachauni
Bhagwabasa
Patar Nachauni

Live output of the real AMS engine — the same one behind the grader.

Highest-risk treks in our library
Try the grader →
Rumtse to Tso Moriri
Ladakh · 5435 m · Difficult
0
Stok Kangri
Ladakh · 6153 m · Difficult
0
Goecha La
Sikkim · 4600 m · Difficult
0
Markha Valley
Ladakh · 5260 m · Difficult
0
04The product

Four tools. One engine.

Everything reasons over the same deterministic core — altitude physiology, permit rules, and route data. The AI only ever explains the numbers.

The core

AMS grader

Paste any night-by-night sleeping profile. Get a risk score, the exact nights that break the rules, and how to fix them.

Open →
Honest grades

Trek library

Curated India treks, each with a real elevation profile — graded from the numbers, not the marketing.

Open →
Logistics

Permit navigator

ILP, PAP, forest and park permits by state and nationality, with who issues them and the guide rules.

Open →
B2G

For rescue & boards

Turn registered itineraries into a region-wide AMS-risk view for tourism departments and SDRF.

Open →
05Where Shikhar fits

Map apps own navigation.
Nobody owns the safety layer.

We don't try to out-map AllTrails. Shikhar lives one layer up — permits, acclimatisation and honest grading — where the incumbents have nothing.

ToolWhat it does wellThe gap Shikhar fills
AllTrailsTrail maps & reviewsThin India data; zero permits, AMS or altitude safety
Komoot / GaiaRoute planning & topoEurope/US-centric; no Indian permit or acclimatisation layer
WikilocUser-uploaded GPX tracksRaw tracks only — no safety, grading or planning
Indiahikes / TTHTrek operators + blogsSell their own treks; marketing-grade difficulty, no AMS engine
ShikharAMS grading, permits, honest grades, weather windowThe safety & logistics layer — India-first
The last word

Plan the trek.
Then plan to come back.

Run your next itinerary through the grader — it takes ten seconds and might change where you sleep.

Grade my itinerary

Decision support, not a doctor or a rescue service. Carry insurance, a way to call for help, and the humility to turn around.