Can I do it as my first trek in Nepal?

No. We highly recommend having successfully completed at least one other high-altitude trek (like EBC or Annapurna) before attempting the Three Passes, as it requires a much higher level of stamina and navigation.

Do permit rules stay constant year-round?

Not always. Permit and guide requirements can change by season and region. Verify the latest rules with the official park office or local authority before departure.

What is the safest start-time strategy?

Start early and plan to clear exposed sections before midday. This reduces heat, storm, and visibility risk on most mountain routes.

How much water capacity is usually needed?

For exposed hiking days, carrying 2-3 liters is common. Increase capacity when refill reliability is low or temperatures are high.

Is mobile signal reliable on route?

Coverage is often patchy outside towns and major valleys. Treat phones as secondary tools and carry offline navigation resources.

Three Passes
Trek

~170 km modeled loop, ~7,000 m cumulative gain, typically 18–21 days with acclimatization (distance varies with side trips).

Intensity Score

Severe

Methodology

/100

Duration

19 days

Route distance

170.0km

Vertical Gain

+7,000m

Max Altitude

5,535m

MISSION BRIEF

Mission Brief

The Three Passes Trek is a ~170 km modeled tea-house loop in the Everest region crossing Kongma La (5,535 m), Cho La (5,420 m), and Renjo La (5,360 m).

It is harder than classic EBC: long days above 5,000 m, boulder navigation on passes, and weather-dependent crossings—not technical mountaineering, but altitude and stamina dominate. Total distance varies with side-trip choices; 170 km is our standard variant including EBC and Gokyo Ri sectors.

Key route characteristics

Regionkhumbu-everest

Duration19 days

Distance170.0 km

Elevation Gain+7000 m

TerrainRugged mountain hiking (Class 1+) - ascent, weather and remoteness drive the difficulty., Circuit, Teahouse, High-Pass

ExposureModerate cliff-edge exposure

Sources

The full Khumbu loop over Kongma La, Cho La, and Renjo La—more demanding than classic EBC, with long days above 5,000 m and tea-house logistics.

MISSION SNAPSHOT

Mission Snapshot

ROUTE TYPELoop

PHYSICAL LOADExtreme: ~170 km modeled tea-house loop (main circuit plus standard EBC/Gokyo side trips) with three passes above 5,360 m and many consecutive days above 4,800 m—not climbing, but altitude marathon.

TERRAINRocky boulder fields on Kongma La and Cho La, glacier tread near Cho La, well-worn tea-house trails in valleys—micro-spikes often needed on pass days.

WEATHER / CONDITIONSElevated exposure — The passes are exposed to high winds and sudden snowstorms. If a weather system moves in, these passes become impassable instantly. A clear weather window is essential for the crossing of any of the 'Big Three'.

NAVIGATIONTea-house corridors are well worn; pass days cross boulder fields and glacier sections where cairns disappear in cloud. Local guide strongly advised for Cho La and Kongma La in poor visibility.

ENDPOINTLukla (loop)

Intensity Breakdown

Understanding what drives the overall route demand

Physical

Technical

Commitment

Primary driver: Sustained high-altitude pass circuit

- Kongma La 5,535 m boulder navigation

- Cho La glacier tread and weather sensitivity

- 10+ days consistently above 4,800 m

- Long no-water sections on pass days

Extreme reflects altitude duration and pass-day navigation, not expedition remoteness. Tea houses reduce camping load versus true alpine expeditions, but consecutive 5,000 m days tax recovery—treat as a step above standard EBC.

Route profile

Full Route Breakdown

Complete stage overview with transparent route metrics. Values are shown as recorded in the route dataset and source links.

Distance

170.0 km

Ascent

7,000 m

Highest point

5,535 m

Start

Lukla (Tenzing-Hillary Airport approach)

Finish

Lukla (loop)

Use the KM / MI toggle in the main menu to switch units.

Operational Reality

Stage distances sum to 170 km — our modeled standard variant including the main Three Passes loop from Lukla plus standard acclimatization and side trips to Everest Base Camp, Kala Patthar, and Gokyo Ri. Published trek distances commonly range ~130–170 km depending on side-trip choices. Not survey-grade GPS.

Route guidance

Route Considerations

Extreme altitude exposure (many days above 4,800 m), AMS/HAPE risk, pass-day weather sensitivity. Carry 3–4 L water on pass legs; micro-spikes for icy Cho La tread.

Consideration // 001

Extreme altitude fatigue

Spending almost 10 days consistently above 4,800m is taxingly strenuous on even the fittest hikers.

Impact

Route-specific

Likelihood

Context-dependent

Tip

Allow for at least 3 weeks for the full loop; do not attempt the passes in consecutive days—take rest days in between; monitor your health obsessively; carry emergency oxygen.

Consideration // 002

Technical pass navigation

Passes like Kongma La and Cho La can be incredibly tricky to navigate if clouds come in or if there is fresh snow over the boulders/glaciers.

Impact

Route-specific

Likelihood

Context-dependent

Tip

Hiring a highly experienced local Sherpa guide is strongly recommended for this specific route; carry micro-spikes and a high-accuracy GPS; never attempt a pass crossing in bad weather.

Consideration // 003

Altitude Warning

Potential altitude-related conditions include AMS, HAPE, and HACE. Adequate acclimatization is essential.

Impact

Route-specific

Likelihood

Context-dependent

Tip

Strict adherence to hydration and gradual ascent protocols (climb high, sleep low).

Route fit

Why hike this route?

Expert Verdict

“The Three Passes loop shows the Khumbu from three 5,000 m+ angles—harder than linear EBC because of pass-day boulder work and altitude duration. Go slow on Kongma La, carry pass-day water, and do not attempt cols in building weather. A prior 5,000 m trek in Nepal is sensible preparation.”

Selection logic

Who This Is For

EXPERT — For active trekkers who have completed at least one 5,000m trek. Requires comfort with rugged, high-consequence terrain, including shifting boulder fields, glacier traverses, and sustained sub-zero temperatures. Not suitable for beginners; requires advanced self-reliance.
PHYSICAL — Extremely High. Requires sustained physical output over 18-21 days, including 10+ consecutive days above 4,800m. Demands excellent cardiovascular fitness and stamina for daily 6-9 hour trekking legs in thin air.
WATCH FOR — Attempting to cross Kongma La as your first pass; it is the highest and most difficult. If you feel weak there, either turn back or take the lower valley route.
WATCH FOR — Underestimating the boulder fields; these are not 'trails', they are massive, shifting granite blocks that require constant balance and focus.

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Route intelligence

What You Need to Know

Essential answers about the demands, risks, and logistics of this route.

Q.How hard is this hike really?

This route has a HikeMetrics Intensity Score of 85/100 (Severe), placing it in a high-demand range best suited to experienced trekkers. Expect average daily distances near 9 km across roughly 19 days, with meaningful cumulative elevation change over the full route. How the score works.

Q.Do I need technical gear?

Yes — this is not a walk-up. Our technical profile for this route flags snow, ice or glacier travel — crampons, micro-spikes or an ice axe. Treat the matching equipment, and the skill to use it, as mandatory rather than optional, and read the gear and risk sections on this page before you commit. The Intensity Score of 85/100 describes the effort, not the technical requirement.

Q.Is water available on the route?

Water is available in lodges. Between lodges (on pass days), there is NO water. Carry 3-4L for the crossing days.

Q.What is the main risk?

Spending almost 10 days consistently above 4,800m is taxingly strenuous on even the fittest hikers. Passes like Kongma La and Cho La can be incredibly tricky to navigate if clouds come in or if there is fresh snow over the boulders/glaciers. Treat forecasts, timing, and your margin for error as part of the route, not an afterthought.

Final decision

Ready to hike Three Passes Trek?

A final decision point after reviewing the route, risks, logistics, and alternatives.

Route fit

This route is a strong match if you're comfortable with the effort level implied by an Intensity Score around 85/100 (Severe), sustained hiking where this route requires it, and the terrain and exposure described in this guide.

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