Twelve days walking to 5,364 metres, sleeping in lodges the whole way. Not a climb, not technical, and entirely governed by how your body handles altitude.
What it involves
Twelve to fourteen days on foot from Lukla at 2,860m to Base Camp at 5,364m and back, sleeping every night in a teahouse — a family-run lodge with a bed, a dining room and a stove. You carry a daypack; a porter can carry the rest.
There is no climbing, no rope, no crampons and no technical ground. The walking is a series of long ascents and descents on rocky paths, and any reasonably fit person who walks regularly can do the distances.
The altitude is the entire difficulty. At Base Camp there is roughly half the oxygen there is at sea level.
The route
Lukla → Phakding → Namche Bazaar (3,440m), the Sherpa capital, with a mandatory acclimatisation day.
Namche → Tengboche (3,860m), a working monastery with the best mountain amphitheatre on the trek.
Tengboche → Dingboche (4,410m), second acclimatisation day.
Dingboche → Lobuche → Gorak Shep (5,164m), and from there Base Camp itself.
Kala Patthar (5,545m), a small peak above Gorak Shep, is where the view of Everest actually is — from Base Camp you cannot see the summit at all. Most people go up for sunrise, and it is brutally cold and worth it.
Descent takes three to four days.
Acclimatisation, which is non-negotiable
The rule is climb high, sleep low, and gain no more than about 500m of sleeping altitude a day above 3,000m. That is why the itinerary has rest days built in at Namche and Dingboche, and why fourteen days is safer than the eleven-day versions sold as “express”.
Mild symptoms — headache, breathlessness, poor sleep, no appetite — are normal. Symptoms that get worse rather than better, confusion, loss of coordination or breathlessness at rest are not, and the response is immediate descent. Helicopter evacuation is available and expensive, and this is the specific thing your insurance must cover: check it explicitly states trekking to 6,000m and helicopter rescue.
Seasons
October–November is the clearest and the busiest: stable weather, sharp views, cold nights.
March–May is warmer, with rhododendrons in flower lower down and more haze. It is also the climbing season, so Base Camp itself is a functioning tent city.
Monsoon (June–September) is wet, leech-ridden and cloudy. Winter is clear, very cold, and many teahouses close.
The Lukla flight
Lukla’s airstrip is short, sloped and famously exposed, and flights are cancelled for weather regularly — sometimes for days. Build two spare days into your trip at the end, or you will be the person paying for a helicopter to make an international connection. Many flights now leave from Ramechhap, four hours from Kathmandu by road, rather than Kathmandu itself.
Permits and guides
You need the Khumbu Pasang Lhamu Rural Municipality permit and the Sagarmatha National Park entry permit. Nepal has tightened rules on independent trekking in recent years — check the current position before assuming you can walk it solo.
Hiring a guide and porter is cheap by international standards, supports the local economy directly, and materially improves your safety margin.
Costs
Modest by trekking standards. The main costs are the Lukla flight, permits, guide and porter, and teahouse food and lodging, which rise steadily with altitude because everything is carried up by porter or yak. Charging a phone, hot water for a shower and wifi all cost extra and get expensive high up.
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