Inside the Everest climbing season: 65 days on the South Col, day by day
Most Everest first-timers picture the summit push and skip everything else. The reality is the opposite: a standard South Col commercial expedition runs 65 days, of which only four to six are summit-related. The other 59 days are flights, treks, base camp acclimatization, three high-camp rotations, weather watching, and recovery. This editorial composite walks through what those 65 days actually look like, drawn from operator schedules across seven major Everest companies and from recent climber accounts spanning the 2023 to 2025 spring seasons. The goal is to give prospective climbers an honest picture of the rhythm, the boredom, the danger windows, and the moments that the summit photograph never shows. The full route framework sits in our Everest climbing guide, with cost in our 2026 Everest cost breakdown, and the broader peak progression in our master mountaineering hub.
The structure of the season at a glance
Spring on Everest runs from late March (early arrivals) through early June (latest summits). Most commercial teams target a late-April arrival at Everest Base Camp, with the summit window typically falling between May 14 and May 26. The season is divided into five distinct phases: arrival and approach (Days 1 to 14), acclimatization rotations (Days 15 to 42), pre-summit rest (Days 43 to 50), summit push (Days 51 to 58), and descent and departure (Days 59 to 65). The exact day numbers shift slightly between operators, but the structure is remarkably consistent across the industry.
What makes Everest different from other major expeditions is the sheer time investment in acclimatization. Climbers spend roughly 50 of their 65 days at or above 5,300m. The body does not adapt to that altitude on a normal schedule. Three to four rotations, each pushing slightly higher than the last, build the physiological reserves needed for summit night. Skip a rotation and the summit success probability drops dramatically. The biology of this is covered in our altitude acclimatization guide and in our high-altitude training program. The peak-by-peak context for how Everest fits the broader 7-Summits ladder lives in our master mountaineering hub and our Seven Summits guide.
Phase 1: arrival and approach (Days 1-14)
1-3
Kathmandu arrival and gear check
Climbers fly into Kathmandu, check into the operator’s designated hotel (typically Hyatt Regency, Yak & Yeti, or Aloft for international teams), and spend three days on logistics. Day one is registration with the Nepal Ministry of Tourism and the climbing permit ceremony. Day two is the gear check with the lead guide, where the entire personal kit gets reviewed item by item. Day three is acclimatization day in Kathmandu (1,400m feels low, but most climbers arrive jet-lagged and benefit from the buffer).
The team meets formally at the welcome dinner. This is the first time most climbers see who they will be living with for the next two months. The composition typically includes 8 to 14 client climbers, 1 to 3 Western lead guides, and the Nepalese ground operator’s senior staff. The dynamics established at this dinner often persist through summit day. The full kit list that gets reviewed during the gear check sits in our expedition gear list, with deep-dive context on the highest-stakes items in our 8000m boots guide and layering systems for mountaineering.
Lukla flight and trek to Phakding
The Lukla flight is the first real Everest moment. The 35-minute Twin Otter or Dornier flight from Kathmandu lands at Tenzing-Hillary Airport, one of the most challenging airstrips in commercial aviation. Pilots aim for the 527m runway carved into a mountainside at 2,860m, and weather routinely cancels or delays flights. Most teams budget two days of buffer for Lukla weather. From Lukla, the team treks three hours to Phakding for the first night on the trail.
Phakding to Namche Bazaar to Tengboche
The trek through the Khumbu valley is the gentlest part of the entire expedition. Climbers pass through Sagarmatha National Park entry, cross several suspension bridges over the Dudh Kosi river, and arrive at Namche Bazaar (3,440m), the regional Sherpa capital. Most teams spend two nights at Namche for acclimatization, with day hikes to Everest View Hotel (3,880m) for the first views of the summit. Day 7 reaches Tengboche Monastery, traditionally the team’s first cultural blessing.
The first time you see Everest on the Namche acclimatization hike, it does not look like the highest mountain in the world. It looks small, distant, and almost unimpressive. Then someone explains the perspective and you realize what you are looking at.
Pheriche, Lobuche, Gorak Shep, and arrival at base camp
The remaining six days slowly walk the team up the Khumbu valley to Everest Base Camp at 5,364m. Pheriche (4,371m), Lobuche (4,940m), and Gorak Shep (5,164m) each get one or two nights for staged acclimatization. By Day 13, the team arrives at base camp, the first sight of which is one of the most photographed moments of any expedition. The rocks, the prayer flags, the colored mess tents, the seracs of the Khumbu Icefall just beyond. This is home for the next six weeks.
Base camp setup and orientation
Base camp life starts with the puja ceremony, the Buddhist blessing in which the lead Sherpas, the lama from Pangboche or Tengboche, and the climbing team gather around the chorten built specifically for the season. Junipers are burned, mantras are chanted, and the climbing gear (boots, crampons, ice axes) is blessed. No serious team climbs without the puja. The route through the icefall traditionally does not open until the puja is complete.
Phase 2: the three rotations (Days 15-42)
The acclimatization rotations are the heart of the expedition. Each rotation pushes the team progressively higher into the mountain’s death zone before retreating to base camp to recover. The pattern across most operators is consistent: Rotation 1 reaches Camp 1 or low Camp 2, Rotation 2 sleeps multiple nights at Camp 2, Rotation 3 reaches Camp 3 on the Lhotse Face. Some operators add a fourth rotation that touches Camp 4 at the South Col before retreating, though this is increasingly rare due to the additional Khumbu Icefall risk it adds.
Camp 1 sits at 6,065m above the Khumbu Icefall. Camp 2 at 6,400m in the Western Cwm is sometimes called Advanced Base Camp. Camp 3 at 7,162m clings to the Lhotse Face. Camp 4 at 7,925m on the South Col is the launch pad for summit night. The deeper geography of these camps, including the route’s technical challenges and timing comparisons with the North Ridge alternative, sits in our Everest South Col vs North Ridge analysis.
Rotation 1: into the Khumbu Icefall
The Khumbu Icefall is the most dangerous single section of the South Col route. The icefall moves visibly: the Khumbu Glacier flows downhill at roughly 1m per day, and seracs (towering ice columns) collapse without warning. Most teams do their first icefall traverse between Days 15 and 18, departing base camp at 1:00 to 3:00 AM to clear the most active sections before sunrise softens the ice. The route is fixed by the Icefall Doctors, a team of elite Sherpas who maintain the ladders and ropes throughout the season.
The first Camp 1 arrival is a milestone. Climbers spend one or two nights, then descend back to base camp for recovery. Some teams push to low Camp 2 on this rotation. The full kit testing happens here: high-altitude boots, crampons, harness setup, oxygen mask fit. Anything that does not work gets fixed at base camp before the next rotation.
Rotation 2: sleeping at Camp 2
The second rotation builds on the first. Teams move through the icefall again to Camp 1, then traverse the relatively flat Western Cwm to Camp 2. Most teams spend two or three nights at Camp 2 to allow deeper acclimatization. The Western Cwm at 6,400m is famous for its surprising heat: the bowl-shaped valley reflects sunlight, and midday temperatures can exceed 30°C. Climbers travel before sunrise and after sunset to avoid the worst heat.
From Camp 2, some teams do a touch-and-return to the lower Lhotse Face (Camp 3 base) without sleeping at Camp 3. This builds the altitude exposure needed for the third rotation. After three to five days of total time at Camp 2 across one or more visits, the team returns to base camp for a full recovery cycle.
Rotation 3: the Lhotse Face and Camp 3
The third rotation is the most physically demanding pre-summit work. The Lhotse Face is a 1,000m wall of blue ice that climbs from 6,500m to over 7,500m at a continuous 40 to 50 degree slope. Climbers ascend on fixed lines using jumars, with full crampons and ice axes. The Lhotse Face is exposed: rockfall and icefall from above hit the route every climbing season, and several climbers die on the face each decade. The full fixed-line technical context lives in our altitude sickness symptoms guide and our breathing techniques explainer.
Camp 3 sits perched on a small ledge cut into the face at 7,162m. Climbers spend one night, often using supplemental oxygen for the first time, before descending. Some operators add a Camp 4 touch (no sleep, just touch the South Col) for additional altitude exposure. After this rotation, the team returns to base camp for an extended rest before the summit push.
Phase 3: pre-summit rest and weather watching (Days 43-50)
The week before the summit push is psychologically the hardest of the expedition. The body needs the rest. The mind hates the wait. Teams typically descend to lower elevations (Pheriche, 4,371m, or even Namche, 3,440m) for two to four days of recovery, returning to base camp around Day 47 to wait for the summit weather window. The weather watching is constant: lead guides cycle through forecasts from MeteoMatics, MountainWeather Service, and Meteotest, looking for the 36 to 72 hour window of low jet stream winds that signals “go”.
The waiting week breaks more climbers than the rotations do. By Day 45 the team is fit, acclimatized, ready, and stuck. Some climbers lose 2 to 4 kg just from anxiety. The lead guide’s job in this phase is more therapy than coaching.
Most operators establish a clear go-no-go protocol for the summit push. The weather window is identified, the gear is staged at high camps, the oxygen supplies are pre-positioned, and the team gets 48 hours notice before departure. False starts happen: a window that looked good 5 days out can collapse 2 days out, sending teams back to base camp to wait for the next opportunity. The 2019 and 2023 seasons each saw 2 to 3 windows; the 2022 season had only one good window, with most successful teams summiting in a tight 48-hour band on May 12 and 13. The full mountain weather forecasting framework is in our mountain weather guide, with the rescue insurance that backs the summit push covered in our mountain climbing insurance article.
Phase 4: the summit push (Days 51-58)
BC to Camp 2: through the icefall a final time
The summit push begins with the same pre-dawn icefall traverse the team has done three times before. This time, however, no return to base camp is planned. Climbers move steadily through the icefall, up through Camp 1, and into the Western Cwm to Camp 2. Most teams reach Camp 2 by mid-afternoon and rest the remainder of the day. Sleep is poor at 6,400m even after three rotations.
Camp 2 to Camp 3: the Lhotse Face on oxygen
Most teams switch to supplemental oxygen at the base of the Lhotse Face on summit push day. The oxygen flow is set to 1 to 2 liters per minute on the climb, sufficient to roughly drop the perceived altitude by 1,500m. The Lhotse Face climb from Camp 2 takes 5 to 7 hours, depending on traffic on the fixed lines. Climbers arrive at Camp 3 in the early afternoon and rest with oxygen on through the night.
Camp 3 to Camp 4: into the death zone
The traverse from Camp 3 to Camp 4 crosses the Yellow Band (a section of yellowish limestone) and the Geneva Spur (a rocky rib at 7,800m), then descends slightly onto the South Col, the saddle between Everest and Lhotse. The South Col is the death zone proper: at 7,925m, the body is no longer able to acclimatize. Every hour spent at this altitude depletes physiological reserves. Climbers arrive at Camp 4 in the late afternoon, rest for 4 to 6 hours, eat what little food they can manage, and prepare for summit night.
Summit night: South Col to summit and return
Summit night begins between 9:00 PM and midnight. Climbers leave Camp 4 in headlamp light, traversing the upper South Col toward the Balcony (8,400m), where the route turns north onto the Southeast Ridge. The Balcony is reached around 3:00 to 5:00 AM. From there, the route climbs the Southeast Ridge, crosses the South Summit (8,748m), traverses the Cornice Traverse, and reaches the Hillary Step (8,790m), a roughly 12m rock and ice section that is the last technical obstacle before the summit ridge.
The summit itself is typically reached between 7:00 and 11:00 AM. Climbers spend 15 to 30 minutes on top, taking photographs, the obligatory summit certificate proof, and what is often a brief Buddhist offering. The descent begins immediately. Most climbers arrive back at Camp 4 between 2:00 and 5:00 PM, having been on their feet for 14 to 18 hours.
The summit photograph is the part nobody warns you about. You have practiced for years to be there. You arrive. You take the photograph. And then the only thing in your head is the descent, because the summit is exactly half the mountain.
Descent through the camps to base camp
The descent from Camp 4 to base camp typically takes three days. Most climbers sleep at Camp 4 the night after summit, then descend to Camp 2 on Day 55. From Camp 2, the team moves through the Western Cwm and back through the Khumbu Icefall one final time, reaching base camp on Day 56 or 57. The icefall on the descent is psychologically the worst section of the entire expedition: climbers are exhausted, the ice is in late-season melt condition, and the cumulative serac risk is at its highest.
Phase 5: descent and departure (Days 59-65)
The final week is the easiest of the expedition. Teams break down base camp, host the closing puja and tipping ceremony, and trek back down the Khumbu valley. Most operators offer a helicopter shuttle from base camp to Lukla (1 hour) or directly to Kathmandu (90 minutes) for climbers willing to pay the additional cost. The standard trek-out takes three days, with overnight stops at Pheriche, Namche, and Lukla.
The Kathmandu return includes the celebration dinner, summit certificate ceremony from the Nepal Ministry of Tourism, and team farewells. Most climbers fly home within 48 hours of arriving back in Kathmandu. The post-expedition recovery, both physical and psychological, often takes 2 to 4 weeks. Weight loss of 5 to 10 kg is common. Frostbite check-ups, dental review (cracked teeth from cold and oxygen mask use are common), and HACE/HAPE residual screening should happen within the first 2 weeks of returning home, with the recovery details covered in our frostbite prevention and treatment article. The Sherpa labor and porter context that runs the entire Khumbu logistics chain is profiled in our analysis of mountain porter labor systems, and the arc that brought most climbers to Everest typically begins with a journey like our Aconcagua trip report.
The numbers behind the season
Total permits issued: 478. Climbers who summited: 296 (62 percent success rate). Deaths during season: 7 (1.5 percent fatality rate per attempt). Largest single-day summit count: 113 climbers on May 21. Helicopter rescues: 39 (mostly for HAPE, frostbite, and exhaustion). The full historical context across multiple peaks is profiled in our Seven Summits guide.
Two patterns deserve attention. First, the summit success rate of 62 percent is dramatically higher than the historical average. Twenty years ago, the per-attempt success rate hovered around 30 to 40 percent. The improvement reflects better fixed lines, better weather forecasting, better operator infrastructure, and higher Sherpa-to-client ratios. Second, the fatality rate has held steady around 1 to 1.5 percent per attempt despite the success rate increase, suggesting that the marginal climber being added to the mountain (those who would have failed in earlier eras) is being protected by the system rather than dying at higher rates.
Who actually climbs Everest in 2026
The composition of an Everest climbing team has shifted noticeably over the past decade. The current commercial expedition demographic skews male (roughly 75 to 80 percent), middle-aged (median age 42), professional (lawyer, doctor, executive, or financially independent), and Western-origin (60 to 70 percent), with a growing minority of climbers from China, India, and the Middle East. Most climbers have completed at least one prior 7,000m or 8,000m climb (Aconcagua, Denali, Cho Oyu when available, or one of the smaller 8,000m peaks). The decision framework for getting to that level of preparation is detailed in our Aconcagua vs Denali decision guide and our Kilimanjaro vs Aconcagua first-7-summit framework.
The first-time international 8,000m climber making Everest their first-ever 8,000m attempt is increasingly common, though still controversial within the climbing community. Operators differ in their willingness to accept these climbers. Premium operators typically require a documented 7,000m+ summit; budget Nepalese operators are more flexible. The argument continues: how much pre-experience is enough? The middle-of-distribution climber today has Aconcagua plus one or two 6,000m+ Nepalese trekking peaks (Lobuche East, Island Peak), and that combination produces summit success rates within 5 percentage points of the more heavily-experienced cohort. The structured training arc that gets a climber from sea level to ready-for-Everest sits in our 8-month Everest training plan and the broader peak progression in our master mountaineering hub.
The bottom line on the timeline
The Everest expedition is dramatically longer, slower, and more rest-heavy than most first-time climbers expect. The summit push is dramatic, but it represents 6 percent of the total expedition time. The remaining 94 percent is approach, acclimatization, rest, and weather watching. Climbers who arrive expecting constant climbing burn out by Day 30. Climbers who arrive expecting long stretches of boredom and slow progress (and who plan accordingly with books, satellite communication, base camp friendships, and patience) summit at noticeably higher rates. The expedition rewards endurance, not intensity. The full peak-by-peak preparation framework that prepares climbers for this rhythm is in our conquer-peaks mountaineering hub, with the cost picture in our full Everest 2026 cost breakdown and the route choice in our South Col vs North Ridge comparison.
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Visit the Master Hub →Frequently asked questions
How long does an Everest expedition actually take?
A standard South Col commercial expedition runs 60 to 65 days from arrival in Kathmandu to departure. Of that, climbers spend roughly 50 days at or above 5,300m, with three to four acclimatization rotations through the high camps before a summit attempt that itself spans four to six days from base camp departure to base camp return.
What does a typical Everest day look like at base camp?
Base camp days follow a predictable rhythm: 6:30 AM tea call, 7:30 breakfast, equipment work and route briefings until 11:30, lunch, afternoon rest or short walks to acclimatization points, 6:00 dinner, evening team briefings, and lights out by 9:00 PM. Between rotations, base camp life can feel monotonous, which surprises most first-time climbers.
How many acclimatization rotations does Everest require?
Most commercial expeditions complete three full rotations before the summit push. Rotation 1 takes climbers through the Khumbu Icefall to Camp 1 (sometimes Camp 2) and back. Rotation 2 reaches Camp 2 with at least one overnight. Rotation 3 climbs to Camp 3 on the Lhotse Face, with some operators including a Camp 4 touch at the South Col before retreating to base camp for the summit push.
What is the Khumbu Icefall actually like to climb?
The icefall is climbed in pre-dawn darkness, with most teams departing base camp between 1:00 and 3:00 AM to clear the most active sections before sunrise softens the ice. The route uses fixed lines and dozens of aluminum ladder bridges installed and maintained by the Icefall Doctors. The traverse takes 5 to 8 hours uphill and 3 to 5 hours coming down.
How does the summit window timing actually work?
Operators monitor weather forecasts from multiple providers (Meteotest, MountainWeather, MeteoMatics) and time the summit push to coincide with low jet stream winds, typically a 36 to 72 hour window in mid to late May. The push from base camp to summit typically takes four days: BC to Camp 2, Camp 2 to Camp 3, Camp 3 to Camp 4, and the summit night ascent and return.
What does a climber eat during the expedition?
Base camp food is high-quality and varied (operators bring full kitchens with cooks). High camp food becomes increasingly limited: dehydrated meals, instant noodles, hot drinks, energy gels, and high-calorie snacks. By Camp 4 and summit night, climbers operate primarily on liquids, gels, and occasional bites of solid food, with most reporting they eat 30 to 40 percent below normal at altitude.
Do climbers actually summit on the day they planned?
Roughly 60 to 65 percent of climbers who reach Camp 4 in their planned summit window do summit on schedule. The other 35 to 40 percent face delays from weather (unexpected wind shifts), traffic congestion (especially near the Hillary Step in busy years), or personal medical issues at the South Col. Some teams summit one or two days later than planned, often after retreating to a lower camp to wait.
What is the descent actually like after the summit?
The descent from summit to Camp 4 takes 3 to 5 hours, with most climbers exhausted and oxygen-depleted by this point. Most teams sleep at Camp 4 or descend to Camp 3 the same day. The full descent to base camp typically takes 2 to 3 days. The Khumbu Icefall return is timed early-morning again, often the most dangerous traverse of the entire expedition due to climber fatigue.
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