Everest Base Camp is the most walked long trek in Nepal, and the standard itinerary from Lukla has settled into a well-tested twelve-day shape. We think it is worth understanding that shape before booking anything, because the days are not arranged for distance. They are arranged for altitude. The walk from Lukla at 2,860 m to base camp at 5,364 m covers roughly 65 km each way, which a fit walker could cover in a few days at sea level. Here it takes eight days up and three or four days down, and the slowness is the whole point.
The twelve-day shape from Lukla
Almost every version of the route follows the same skeleton. Day one is the short walk from Lukla down to Phakding at 2,610 m, deliberately losing height after the flight. Day two is the long climb through the Sagarmatha National Park entrance to Namche Bazaar at 3,440 m, with the first proper view of Everest from the trail above the last suspension bridge. Day three is an acclimatization day in Namche, usually spent walking up to a viewpoint above the town and back down to sleep.
Day four continues to Tengboche at 3,860 m, where the monastery sits on a ridge facing Ama Dablam, 6,812 m. Day five reaches Dingboche at 4,410 m in the Imja valley. Day six is a second rest day, again with a short climb and a return to the same bed. Day seven goes up past the memorial cairns on the Thukla ridge to Lobuche at 4,940 m. Day eight walks to Gorak Shep at 5,164 m, drops the packs, and continues along the moraine to base camp and back. Day nine is the early climb of Kala Patthar and then the long descent to Pheriche. Days ten to twelve retrace the valley to Namche and Lukla.
What base camp actually shows you
This is the honest part. Everest Base Camp is a field of glacial rubble beside the Khumbu Icefall, and in the spring climbing season it is a tent city. In autumn it is empty, marked by a boulder covered in prayer flags and a great deal of loose rock. The setting is dramatic, with the icefall tumbling down from the Western Cwm and Nuptse, 7,861 m, filling the sky to the east. But you cannot see the summit of Everest from base camp. The mountain is hidden behind its own shoulder and behind Nuptse. Many trekkers photograph the sign and only later realise that the peak behind them is not Everest at all.
Standing at the foot of the icefall, hearing it creak, is a real experience. But if the aim is to see the highest mountain on earth, base camp is the wrong viewpoint: a destination in name and a waypoint in practice.
Kala Patthar is the summit of the trek
Kala Patthar, the black rock, is the brown hump that rises above Gorak Shep on the flank of Pumori, 7,161 m. The trekking top is usually given as 5,545 m on maps, with a rockier true summit a little higher at 5,644 m. From here the whole upper Khumbu opens out. Everest, 8,849 m, stands clear above the Lhotse-Nuptse wall, with the summit pyramid, the south col, and the plume of spindrift all visible. The Khumbu Glacier curves away below, and base camp is a scatter of dots at its edge.
Most people climb it at dawn, leaving Gorak Shep in the dark and cold to catch the first light on the summit. The climb takes around two hours up and one down. The sunset version is warmer and the light on Everest is often better, since the mountain faces west at the end of the day, but it means walking down in fading light and eating late. Either way, we think Kala Patthar should be planned as the high point of the trip, with base camp visited the afternoon before as the warm-up. If the weather gives only one clear morning, spend it here.
Altitude, and why the rest days are not optional
The route gains more than 2,500 m in a week, and that is fast. Acute mountain sickness is common above Namche, and the two rest days at Namche and Dingboche exist because the body needs time to adjust. The rule that works is to sleep no more than about 300 to 500 m higher each night above 3,000 m, and to take a rest day every 1,000 m of gain. The standard itinerary follows this closely. Trekkers who skip a rest day to make up time lost to a delayed flight are the ones who most often end up descending early or being evacuated.
A few points we would stress:
- A headache, poor appetite and broken sleep at Dingboche are normal signs of adjustment; worsening headache, vomiting, confusion or breathlessness at rest are not, and mean going down the same day.
- Drinking three to four litres a day helps, as does eating even when hungry is the last thing you feel.
- Sleeping pills and alcohol slow breathing and make things worse.
- There is a medical post at Pheriche staffed in the main seasons, and the descent from Gorak Shep to Pheriche loses nearly 900 m in an afternoon.
Seasons, flights and permits in general terms
The two main windows are October to November, with the clearest skies and the coldest nights, and March to May, warmer and greener but hazier by the afternoon. Winter is possible for the well-equipped, with base camp nights well below minus 15 degrees. The monsoon from June to September brings cloud, leeches at low altitude, and cancelled flights.
The Lukla flight is the least reliable part of the whole plan. It is a short hop on a small aircraft that only operates in clear conditions, and in the busiest months it often departs from Ramechhap, several hours by road east of Kathmandu, rather than from the capital itself. Build at least two spare days into the end of the trip. Permits are straightforward: an entry fee for the national park and a local municipality fee, both paid on the way in, plus the usual registration. Independent trekking remains common on this route, and the trail is impossible to lose in daylight.
Practical notes for the route
Lodges exist in every village and at every overnight stop, and above Dingboche they are busy in October. Rooms are cold and bathrooms shared; beds are cheap while hot water, charging and food get dearer with every hundred metres. Cash is essential above Namche. The trail is a mix of good stone paths, yak-worn dirt and glacial moraine; walking poles earn their weight on the descent from Gorak Shep.
The kit that matters is a sleeping bag rated to minus 15 or better, a down jacket for evenings, and a good hat and gloves for the dawn on Kala Patthar. Nothing technical is needed. What the trek asks for is patience, respect for the altitude, and the willingness to treat base camp as a visit and Kala Patthar as the goal.