Kongma La Pass

This guide covers what the crossing actually involves: the route stage by stage, how long it takes, what the terrain feels like underfoot, where you sleep, what conditions do to the pass across the seasons, and what a guide is watching for on the day. It doesn't cover the full 17-day Three Passes itinerary — for that, see our Everest Three Passes Trek.

Where Is Kongma La Pass?

Kongma La sits in the Khumbu region of Sagarmatha National Park, in Solukhumbu district, on the boundary between two very different landscapes. To its south and east lies the Imja Valley, home to Chhukung — a small cluster of teahouses that serves as the staging point for the crossing. To its north and west lies the lateral moraine of the Khumbu Glacier, which the trail follows down toward Lobuche on the classic Everest Base Camp route.

It's the easternmost of the three passes on the Three Passes circuit and, in most itineraries run counter-clockwise, the first one trekkers cross — often before they've even reached Everest Base Camp. That ordering matters: Kongma La lands early in the trip, while legs and lungs are still adjusting to the demands of a multi-week high-altitude route, which is part of why it has a reputation as the toughest of the three.

Don't confuse Kongma La with Kongma Danda or Kongma Tse, both separate features in the same general area — or assume it connects to Everest Base Camp directly. It doesn't. The link to EBC comes afterward, via Lobuche.

Kongma La Pass: Altitude and Key Facts

A quick note on the elevation figure: you'll see 5,535m, 5,540m, and even 5,545m across different maps, guidebooks, and GPS-logged trip reports. This isn't anyone being careless — it reflects small differences in exactly where a device or map marks "the summit" on a broad, rocky saddle, plus ordinary GPS margin of error at altitude. 5,535m is the most widely cited figure and the one used throughout this guide.

Route: Chhukung to Lobuche via Kongma La

This is the heart of the crossing, and it breaks into four distinct stages.

The Start in Chhukung

Chhukung (4,730m) is a small, basic settlement at the head of the Imja Valley — three to five teahouses, positioned specifically as a staging camp for Kongma La rather than a destination in its own right. Trekkers typically arrive here a day ahead of the crossing, using the short trekking day from Dingboche to rest and finish acclimatising.

Crossing day starts early — our guides depart Chhukung by 5:30–6:00 AM. That's not a formality. A long day at altitude goes better when the hardest climbing happens in the cold, stable air of early morning rather than in the afternoon cloud that regularly builds over the Khumbu by mid-to-late morning.

The Approach to Kongma La

From Chhukung, the trail climbs steadily above the Chhukung Glacier on rocky, moraine terrain, gaining roughly 800m to the pass. There's no single fixed path here in the way there is on the main EBC trail below — the route crosses boulder fields and loose scree, and the exact line shifts slightly from season to season as rockfall and minor slides reshape sections of the moraine. This is one of the reasons a guide who has crossed recently, not just crossed before, is genuinely useful here.

The climbing itself doesn't require technical skill or equipment in normal conditions — no ropes, no ice axe — but it's sustained and demanding, especially in the thinner air above 5,000m. Altitude, not technical difficulty, is what makes this section hard.

The Pass Itself

The summit is a broad, rocky saddle marked with prayer flags and cairns, and it delivers one of the better panoramas on the entire Three Passes route — Makalu, Lhotse, Nuptse, Ama Dablam, and the sweep of the Khumbu Himal are all visible from here on a clear morning. It's worth taking a few minutes here rather than rushing straight through.

That said, reaching the pass is not the end of the hard work. The descent on the far side is, if anything, more demanding than the climb up — this is worth planning for mentally, since it's easy to treat the summit as the finish line.

The Descent to Lobuche

The descent drops steeply onto the lateral moraine of the Khumbu Glacier — loose, rocky ground that demands full concentration with every step, particularly on tired legs after the climb. The route follows the moraine down before joining the main Everest Base Camp trail near Thukla, close to the climbers' memorial ridge, then continues to Lobuche.

Trekking poles are not optional on this section. The combination of loose footing, fatigue, and altitude makes this the part of the day where most minor slips and knee strain happen — not on the ascent.

How Long Does the Kongma La Crossing Take?

Most trekkers cover the roughly 11km from Chhukung to Lobuche in 7–9 hours, including a rest at the summit. That's a wide window, and deliberately so — actual time depends heavily on:

• Your acclimatisation and overall pace at altitude
• Snow cover on the approach or descent
• Group size and the pace of the slowest member
• Weather and visibility on the day
• How long you spend at the summit

Treat 7–9 hours as a planning range, not a target to beat. This is a full, demanding high-altitude trekking day either way — the kind where finishing an hour "slow" but healthy is always the better outcome than finishing fast and depleted.

How Difficult Is Kongma La?

Kongma La is widely considered the hardest of the three passes, and the reasons are specific rather than generic:

• It's the highest point on the route — at 5,535m, it sits above Everest Base Camp itself, and altitude alone makes any sustained effort here harder than the same effort lower down
• The terrain is loose and uneven — rocky moraine and scree rather than a maintained trail, on both the approach and the descent
• It's a long day with a hard descent — unlike Cho La, where the ascent is generally considered the tougher half, Kongma La's descent onto the Khumbu Glacier moraine is arguably harder on the body than the climb up
• It comes early in the Three Passes itinerary — trekkers cross it before they've built up the cumulative fitness and altitude tolerance that later passes benefit from
• Facilities are minimal — there's nowhere to stop, rest properly, or wait out worsening weather between Chhukung and Lobuche

What it is not is technically difficult in the mountaineering sense. There's no glacier to cross and no fixed ropes in normal conditions — the difficulty is physical and altitude-related, not technical.

Altitude and AMS on Kongma La

At 5,535m, Kongma La sits well above the altitude where Acute Mountain Sickness becomes a genuine concern. Proper acclimatisation before the crossing — not just general fitness — is what actually protects you here. Symptoms like persistent headache, nausea, or loss of coordination should never be pushed through; they're a signal to stop ascending, tell your guide, and, if they worsen, descend.

This article isn't the place for a full altitude-sickness breakdown — our Everest Base Camp Altitude Sickness Guide covers AMS, HAPE, and HACE, prevention, and what guides actually do when symptoms appear, in much more depth.

Weather and Conditions

Conditions at 5,535m can shift from clear to genuinely difficult within a few hours, regardless of season — this is a fully exposed, high-altitude ridge with no shelter. What follows is a general picture, not a guarantee for any specific date.

Spring (late March–May): Generally the more stable of the two recommended windows, though afternoon cloud can build from late April, which is part of why an early start matters even more as spring progresses.

Autumn (late September–November): Usually the most settled conditions of the year on Kongma La, with October typically offering the clearest visibility. Nights at Chhukung and Lobuche are cold and get colder as November goes on.

Winter (December–February): Conditions on the pass itself can turn genuinely severe — extreme cold, and a real possibility of the approach or descent being snow-covered enough to change the difficulty of the day significantly. Only for well-prepared, experienced parties.

Monsoon (June–August): Not recommended. Cloud regularly obscures the pass entirely, fresh snow can fall even in summer at this elevation, and visibility on the exposed summit ridge is frequently poor.

A responsible guide monitors conditions on the morning of the crossing and will adjust the plan — a later start, a different pace, or occasionally an alternative route — if conditions on the day don't match what the season would suggest.

Snow and Ice

Snow conditions on Kongma La vary considerably by season and by year, and they're not something this guide can predict for any specific date. Early-season snow behaves differently from late-season snow that's been through several freeze-thaw cycles, and a route that was clear a week earlier can carry fresh snow after a single storm.

Whether traction devices are needed is a call made on the day, based on actual conditions — not a fixed rule. Our guides carry basic traction equipment and will advise if it's needed for the approach or descent; this is not something to guess at from a packing list written months in advance.

What the Terrain Is Like

Picture a mix of rocky trail, loose scree, and glacial moraine rather than a maintained footpath. The approach climbs over boulder fields above the Chhukung Glacier; the summit itself is a broad, rocky saddle; the descent drops onto the lateral moraine of the Khumbu Glacier, where the ground shifts and loose rock underfoot demands careful, deliberate footing rather than a normal walking rhythm. Snow, where present, sits on top of this terrain rather than replacing it — meaning conditions can go from dry rock to snow-covered scree within the same day depending on elevation and aspect.

Where to Sleep Before and After Kongma La

Chhukung (4,730m): Three to five basic teahouses. This is a staging point, not a destination — expect simple rooms and a genuinely early night before the crossing.

Lobuche (4,910m): Basic teahouses on the lateral moraine of the Khumbu Glacier. Temperatures here regularly drop below −15°C overnight, and sleep quality at this altitude is often poor for most trekkers regardless of how the day went.

There are no teahouses, and no normal stopping point, on the pass itself. Whatever you're carrying for the crossing day — water, food, layers — has to get you the full distance between Chhukung and Lobuche.

Food and Water on Crossing Day

Eat a proper breakfast in Chhukung before setting out; appetite often drops at this altitude, but the demands of a 7–9 hour day don't. Carry more water than feels necessary — a minimum of 2–3 litres is a reasonable starting point, more in warmer conditions — plus enough snacks to fuel the full crossing, since there's nowhere to buy or refill either along the way. Don't rely on untreated stream or glacial water on this section; if you're carrying a filter or purification tablets, this is a day to use them, not skip them.

Toilets and Facilities

There are no facilities of any kind on the pass itself. Use what's available in Chhukung before departing, and plan accordingly for the 7–9 hour crossing to Lobuche.

Do You Need a Guide for Kongma La?

Nepal has required a licensed guide for trekking in protected areas — including Sagarmatha National Park, which contains Kongma La — since April 2023. In practice, how consistently this has been enforced specifically in the Khumbu has been a genuinely unsettled question, since the local Khumbu Pasang Lhamu Rural Municipality runs its own separate permit arrangement alongside the national park system. If you're researching this independently, verify the current situation before planning around it — regulations and enforcement in this region have shifted before and could shift again.

What isn't in question is how useful a guide is on this specific crossing. Route-finding across shifting moraine, reading whether the morning's conditions call for a change of plan, knowing exactly where the trail joins the main EBC route near Thukla, and making the call to slow down or turn back if someone's showing altitude symptoms — this is what a guide is actually doing on Kongma La day, beyond simply being present. Every Everest Three Passes Trek with Places Nepal includes a professional, English-speaking high-altitude guide for the full route, Kongma La included.

What to Pack for Kongma La

This is a Kongma La-specific list — for the full trek packing list, see the Everest Three Passes Trek page.

• Broken-in trekking boots with good ankle support
• Warm base and mid layers — temperatures at the summit can sit well below freezing even when Chhukung feels mild
• A windproof, waterproof outer shell
• Warm gloves and a spare inner pair
• A warm hat and buff or neck gaiter
• UV-rated sunglasses and sunscreen — reflected glare at this altitude is intense even on overcast days
• 2–3 litres of water capacity, plus purification tablets or a filter
• Trail snacks for the full 7–9 hour day
• Trekking poles — genuinely useful on the descent, not optional
• A headlamp, in case an early start or a slow day pushes into low light
• Any personal medication

On traction devices: bring microspikes if you have them and don't mind the extra weight, but whether you'll need them on this specific crossing depends on current snow and ice conditions, which your guide will assess on the day.

How Kongma La Fits into the Everest Three Passes Trek

Kongma La is one of three passes above 5,300m on the Everest Three Passes Trek, alongside Cho La and Renjo La. In the standard counter-clockwise itinerary, it's crossed first — from Chhukung to Lobuche — before the route continues to Everest Base Camp and Kala Patthar, then west over Cho La to the Gokyo Valley, and finally over Renjo La back toward Namche. Some trekkers who want to avoid Kongma La specifically route instead from Dingboche toward Dzongla, rejoining the Cho La side of the loop and skipping this pass entirely — a genuinely common choice, not a compromise to be embarrassed about.

For the full 17-day route, elevation profile, and day-by-day itinerary, see our Everest Three Passes Trek.

Kongma La vs Cho La vs Renjo La

*Cho La's elevation is cited between roughly 5,367m and 5,420m across different sources, including on Places Nepal's own site — this guide uses the more widely externally verified 5,420m for comparison purposes. A dedicated Cho La guide would be the right place to resolve this fully. [INTERNAL LINK NEEDED: Cho La Pass guide]

Kongma La is generally considered the hardest of the three on altitude and terrain alone; Cho La is the most technical because of its glacier crossing; Renjo La is widely rated the most scenic and least technically demanding, though its position late in the standard itinerary makes it harder than it looks on paper. [INTERNAL LINK NEEDED: Renjo La Pass guide] — in the meantime, see our Renjo La Pass Trek with Gokyo Lake if Renjo La specifically is what brought you here.

Distance

The Chhukung-to-Lobuche crossing is commonly cited at around 11km, though don't treat this as a precise, universal figure. Exact distance depends on the specific line taken across the moraine (which shifts slightly year to year), how a given GPS device measures switchbacks and boulder-field detours, and whether a trip report includes time spent exploring the summit area. Treat distance as a rough planning reference and trekking time as the more reliable measure of what the day actually demands.

Safety and When Not to Cross

Crossing Kongma La should never be treated as a fixed obligation just because it's on an itinerary. Conditions on the day — not the plan made weeks earlier — should decide whether the crossing happens. Reasons an experienced guide might delay, reroute, or postpone include:

• Heavy fresh snowfall on the approach or descent
• Poor visibility or an incoming storm
• Dangerous ice on sections normally clear of it
• Illness or worsening altitude symptoms in the group
• Trail conditions reported as unstable by other guides or teams that crossed recently

No operator can guarantee a crossing will happen on a specific date. What a good one can guarantee is that the decision gets made on genuine safety grounds, not to save time.

Common Kongma La Mistakes

• Starting too late — losing the cold, stable morning window and running into afternoon cloud or wind on the descent
• Underestimating the altitude — treating a "non-technical" pass as an easy one, when 5,535m is the real source of difficulty
• Carrying too little water — there's no refill point for the entire 7–9 hour crossing
• Treating the summit as the finish line — the descent to Lobuche is often harder than the climb up
• Ignoring early AMS symptoms because the day feels too important to interrupt
• Relying on old trail-condition reports rather than what a guide has seen recently
• Under-layering for a summit that's consistently colder and windier than Chhukung feels at departure
• Rushing the descent on tired legs, where most slips and knee strain actually happen

FAQ

How high is Kongma La Pass? 5,535m (18,159 ft), the highest point on the Everest Three Passes Trek — higher than Everest Base Camp itself.

Where is Kongma La Pass? In the Khumbu region of Sagarmatha National Park, connecting Chhukung in the Imja Valley to Lobuche near the Khumbu Glacier.

How difficult is Kongma La? Physically demanding due to altitude, loose rocky terrain, and a long day with a genuinely hard descent — but not technically difficult; no glacier crossing or ropes are required in normal conditions.

How long does it take to cross Kongma La? Most trekkers take 7–9 hours for the roughly 11km from Chhukung to Lobuche, depending on pace, conditions, and acclimatisation.

Can you cross Kongma La from Chhukung to Lobuche? Yes — this is the standard direction in most Three Passes itineraries, including Places Nepal's.

Is Kongma La harder than Cho La? Most experienced guides and trekkers rate Kongma La as physically harder due to altitude and terrain, while Cho La is considered more technically demanding because of its glacier crossing.

Is Kongma La open all year? There's no formal "open" or "closed" status, but winter and monsoon conditions can make a safe crossing genuinely difficult or inadvisable. Spring and autumn offer the most reliable windows.

Do you need a guide for Kongma La? Nepal has required a licensed guide in protected areas, including Sagarmatha National Park, since April 2023, though enforcement specifics in the Khumbu have varied. Every Places Nepal Three Passes trek includes one regardless.

Do you need crampons for Kongma La? Not always — it depends on current snow and ice conditions on the day, which your guide assesses before departure. There's no fixed rule.

Where do you sleep before crossing Kongma La? Chhukung (4,730m), a small staging settlement with a few basic teahouses at the head of the Imja Valley.

Is Kongma La safe? With proper acclimatisation, an early start, the right gear, and an experienced guide making real-time conditions calls, yes — but it's a serious high-altitude crossing, not a casual day hike.

Can weather prevent the Kongma La crossing? Yes. Heavy snow, poor visibility, or dangerous ice can lead a guide to delay or reroute the crossing. This is a safety decision, not a failure of planning.

Planning the Full Route

If Kongma La is one piece of a route you're building toward, the complete itinerary — including the Cho La and Renjo La crossings, Everest Base Camp, Kala Patthar, and the Gokyo Valley — is laid out on our Everest Three Passes Trek page. If you'd rather talk it through first, our team is reachable on WhatsApp.