Cho La Pass and the Three Passes Trek: Everest's Toughest Route

The Three Passes

Trekkers can cross all three passes in sequence (the full Three Passes Trek, typically 18-21 days) or select Cho La Pass alone as a single, shorter add-on connecting a Gokyo Lakes visit to the main Base Camp trail - the most commonly chosen option for trekkers with limited time who still want a taste of the high-altitude pass-crossing experience.

Crossing Cho La Pass: What It Actually Involves

The standard direction crosses from Dzongla (4,830m) to Thangnak in the Gokyo valley, a 7+ hour day involving roughly 600m of net elevation gain to the pass summit followed by a descent across the Chola Glacier itself. Microspikes - simple rubber-and-metal traction devices that fit over hiking boots - are standard equipment for the glacier crossing and the icy sections near the pass summit; these can be rented cheaply in Namche Bazaar before continuing up-valley.

The ascent to the pass from Dzongla begins with a steep, rocky climb in the pre-dawn cold, the summit marked by the prayer flags that mark every significant pass in the Himalaya, with - on a clear day - a 360-degree view that includes Ama Dablam, Cholatse and Baruntse alongside the more familiar giants. The glacier traverse that follows is a roughly 45-minute crossing requiring careful footing but no technical climbing skill, followed by a genuinely demanding scree descent into Thangnak or onward toward Gokyo, depending on direction of travel.

Which Direction to Cross

Cho La Pass can be crossed in either direction - Khumbu-to-Gokyo or Gokyo-to-Khumbu - and trekkers debate which is preferable. Crossing from the Khumbu side (Dzongla to Gokyo) means tackling the steep rocky ascent first and the glacier-then-scree descent second; crossing from Gokyo side reverses this. Most guides consider the Khumbu-to-Gokyo direction marginally easier on the legs, since the descent into Gokyo on the western side is less brutally steep than the descent into Dzongla on the eastern side - though both directions present genuine technical demands regardless of which way you go.

Acclimatization Requirements - Non-Negotiable

The Three Passes Trek and even the standalone Cho La Pass route spend extended time above 4,800m and cross terrain above 5,300m on multiple separate days - a profile that places real demands on the body's altitude adaptation. Mandatory rest days at Namche Bazaar and at Gokyo are built into every responsible itinerary, and trekkers attempting this route should ideally already have some high-altitude trekking experience (an Everest Base Camp trek completed previously, for example) before attempting Cho La Pass or the full three-pass route.

For background on altitude management specific to this region, see our altitude sickness and acclimatization guide - the same principles apply with even less margin for error given the additional altitude these passes demand.

Suggested Itinerary: Cho La Pass via Gokyo to Everest Base Camp

This route delivers the complete Everest region experience in a single trek - Gokyo's lakes, the Ngozumpa Glacier, Cho La Pass itself, and the classic Base Camp and Kalapatthar finale - making it, for trekkers with the time and conditioning, arguably the single best multi-week trekking itinerary available anywhere in Nepal.

Who Should Attempt This Route

Cho La Pass and the Three Passes Trek suit trekkers who have prior high-altitude trekking experience, genuine cardiovascular fitness built over months of preparation, and a realistic appetite for demanding, occasionally technical terrain rather than the more straightforward (if still challenging) walking of the standard Base Camp trail. This is not the right first Everest region trek for most people - but for the right trekker, at the right stage of their Himalayan trekking experience, it is the route that delivers the most complete and memorable version of this landscape available.

Contact Getaway Nepal Adventure to discuss whether the Cho La Pass route or full Three Passes Trek is right for your experience level and timeline.

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