Island Peak, known in Nepali as Imja Tse, is the most popular trekking peak in Nepal and, for many people, their first Himalayan summit. At 6,189 m, it rises from the head of the Imja valley near Everest, surrounded by giants: the vast south face of Lhotse towers directly above, with Ama Dablam, Makalu and Baruntse nearby. Its English name comes from Eric Shipton's 1951 expedition, which thought it looked like an island in a sea of ice when seen from Dingboche.
Climbing Island Peak is a real mountaineering experience, with a glacier crossing, fixed ropes on a steep headwall and an airy summit ridge. Yet it is achievable for fit trekkers with good acclimatisation and basic training. Here's the route, difficulty, training, gear, permits and how to combine the climb with Everest Base Camp.
Quick answer: Island Peak (6,189 m) is usually climbed as part of a 16–19 day trip combined with the Everest Base Camp trek. The climb from base camp (about 5,090 m) takes 10–12 hours round trip, including a rocky ascent, a glacier crossing and a steep 45–50° headwall on fixed ropes. You need an NMA peak permit, a climbing guide and mountaineering gear. It costs about US$2,300–3,200 and is best in April–May and October–November.
Island Peak at a glance
| Fact | Details |
|---|---|
| Altitude | 6,189 m (20,305 ft) |
| Location | Imja valley, Everest region |
| Grade | PD+ (moderately difficult alpine grade) |
| Base camp | About 5,090 m |
| Summit day | 10–12 hours round trip |
| Technical sections | Glacier, crevasses (sometimes ladders), 45–50° headwall, exposed ridge |
| Permit | NMA peak permit, Sagarmatha National Park, Khumbu fee |
| Typical trip | 16–19 days from Kathmandu |
| Best time | April–May, October–November |
The route
Approach and acclimatisation
Most climbers trek to Everest Base Camp and Kala Patthar first, which provides excellent acclimatisation, then return to Dingboche and walk up the Imja valley to Chhukung (4,730 m). Others climb Chhukung Ri as an acclimatisation hike. From Chhukung, a short walk along the moraine leads to Island Peak Base Camp, a tented camp beside the Imja Glacier.
Training day
At base camp, your climbing guide runs a training session on using crampons, ice axe, harness, ascender (jumar) and descender on fixed ropes, and walking roped on a glacier. Even experienced trekkers benefit from this practice.
Summit day
Climbers leave base camp around midnight to 2 a.m. The first section climbs a rocky trail and gully to the crampon point at around 5,700–5,800 m. Here, you put on crampons, rope up and cross the glacier, weaving around crevasses; in some seasons, aluminium ladders are used to cross them. The glacier leads to the foot of the headwall, a steep slope of snow and ice about 100–150 m high, climbed with an ascender on fixed ropes. Above the headwall, a narrow, exposed ridge leads to the summit. After photos, climbers descend the headwall by abseiling or arm-wrapping, recross the glacier and return to base camp or Chhukung.
How difficult is Island Peak?
Island Peak is graded PD+ in the alpine system, meaning moderately difficult. The main challenges are the altitude, a long summit day and the steep headwall, which is physically demanding at over 6,000 m. You do not need previous mountaineering experience, but you must be very fit, comfortable with heights and able to learn and use the basic techniques. Crowds on the fixed ropes in peak season can cause delays and cold waits. Compare with other peaks in our Island Peak vs Mera Peak guide.
Sample 18-day itinerary
| Days | Plan |
|---|---|
| 1–2 | Arrive Kathmandu; gear check and permits |
| 3–4 | Fly to Lukla; trek to Phakding and Namche |
| 5 | Acclimatisation in Namche |
| 6–7 | Tengboche and Dingboche |
| 8 | Acclimatisation in Dingboche |
| 9–11 | Lobuche, Everest Base Camp, Kala Patthar |
| 12 | Descend to Chhukung |
| 13 | Island Peak Base Camp; training |
| 14 | Summit day, return to Chhukung |
| 15 | Reserve day for weather |
| 16–17 | Trek to Namche and Lukla |
| 18 | Fly to Kathmandu |
Shorter itineraries go directly to Chhukung without visiting Everest Base Camp, but they offer less acclimatisation, and we recommend them only for climbers with recent altitude experience.
Gear list
Island Peak requires technical mountaineering equipment in addition to standard trekking gear. You will need insulated mountaineering boots compatible with crampons (double boots or 6,000 m boots), crampons, a climbing harness, a helmet, an ice axe, an ascender (jumar), a descender such as a figure-of-eight or belay device, several locking and non-locking carabiners, a sling, an expedition down jacket, insulated mitts and liner gloves, a balaclava, glacier glasses, a head torch with spare batteries, and a sleeping bag rated to −20°C for base camp. Much of this can be rented in Kathmandu, Namche or Chhukung, but make sure boots fit well. Your climbing guide will check your gear before the climb.
Training for Island Peak
Fitness is the most important factor in success. Train for at least 12–16 weeks, focusing on endurance and strength: long hikes carrying a 10–12 kg pack, stair climbing, steep hill intervals, cardio (running, cycling, rowing) and leg and core strength exercises. The headwall is where fitness really counts, as climbing with an ascender at over 6,000 m is exhausting. If possible, take a basic winter mountaineering or glacier travel course at home to learn crampon technique and rope skills. Practise with your boots and gear before the trip. For the details, read our training guide.
Acclimatisation
Good acclimatisation is the key to reaching the summit. Trekking to Everest Base Camp and climbing Kala Patthar (5,545 m) before Island Peak means your body is well adapted by the time you attempt the summit. Alternatively, climbing Chhukung Ri (about 5,550 m) and spending extra nights around Chhukung helps. Never rush the itinerary to save a day; most failures on Island Peak are due to poor acclimatisation. Our altitude guide goes into more detail.
Best season
Spring (April–May) is the most popular season: days are longer and warmer, snow conditions on the headwall are usually good, and the Everest climbing season brings a lively atmosphere to the Khumbu. Autumn (October–November) offers clearer skies and superb views, but summit mornings are colder and the headwall may be icier. Winter climbs are possible but very cold and windy, and the monsoon brings cloud and snow.
Changing glacier conditions
Like many Himalayan glaciers, the Imja Glacier and the glaciers on Island Peak are changing as temperatures rise. The crevasse field below the headwall varies from year to year, and some seasons require several ladders or longer routes around crevasses. The nearby Imja Tsho, a glacial lake that has grown dramatically since the 1960s, is monitored closely, and engineering work has lowered its water level to reduce flood risk. Experienced climbing Sherpas assess the route each season and fix ropes accordingly.
Safety
Island Peak is a serious mountain, and safety must come first. Climb with an experienced, licensed climbing guide, with a ratio of no more than two climbers per guide on summit day. Set a turnaround time and respect it, even if the summit is close. Turn back if you feel unwell, the weather deteriorates, or the headwall is overcrowded. Use a helmet at all times on the climb, as rockfall and falling ice are possible. Make sure your insurance specifically covers mountaineering to at least 6,500 m and helicopter evacuation. For the details, read our insurance guide.
Views from the summit
From the summit of Island Peak you're surrounded by some of the biggest walls in the Khumbu. The immense south face of Lhotse, over 3,000 m high, towers immediately to the north. To the east lie Makalu, Baruntse and the Imja glacier lake, to the south Ama Dablam and the peaks of the Hongu, and to the west, the Khumbu valley. On a clear morning it's hard to describe.
Who should climb Island Peak?
Island Peak suits fit, motivated trekkers who want their first taste of Himalayan mountaineering, especially those who enjoy the Everest region and want to add a summit to their trek. It is also a good training climb for those planning bigger expeditions, such as Ama Dablam or an 8,000 m peak. It is not suitable for people afraid of heights or those who cannot commit to serious fitness training.
Climbing Sherpas and guides
Your climbing team is the most important factor in your safety and success. Experienced climbing Sherpas fix ropes, assess conditions, guide you on the glacier and headwall and make crucial decisions about weather and turnaround times. Many have climbed Island Peak dozens of times and Everest itself. Choose an operator that employs licensed, experienced climbing guides, provides a good guide-to-climber ratio and pays fair wages and summit bonuses. Tipping your climbing Sherpa after the climb is customary. Have a look at our guide to hiring guides and porters.
Common questions
What if I cannot climb the headwall? Your guide will turn back with you; there is no shame in stopping, and many climbers enjoy the glacier section and views even without the summit. How cold is summit day? Often −15°C to −25°C with wind chill in the early morning. Can I climb Island Peak without trekking to EBC? Yes, but it requires careful acclimatisation around Chhukung. Is Island Peak crowded? In peak season, yes; starting early and choosing shoulder weeks helps.
After Island Peak: what next?
Many climbers use Island Peak as a stepping stone. Next steps might include Lobuche East (6,119 m), which is more technical, Mera Peak (6,476 m), which is higher but less technical, or expedition peaks such as Ama Dablam (6,812 m), Himlung Himal (7,126 m) and eventually 8,000 m peaks like Manaslu or Cho Oyu. See our trekking peaks guide.
Permits and costs
You need a Nepal Mountaineering Association (NMA) peak permit, with fees that vary by season (highest in spring), plus the Sagarmatha National Park permit and Khumbu local fee. A garbage deposit is also required. A full guided package including Everest Base Camp typically costs US$2,300–3,200, covering flights, permits, guides, climbing Sherpa, tents at base camp, group climbing gear and meals. See our Island Peak Climbing trip.
Summit day, hour by hour
Summit day begins in the dark. Around midnight or 1 a.m., your climbing Sherpa wakes you with hot tea and a light breakfast in the dining tent. You pull on thermal layers, a down jacket and harness, check your head torch and set off from base camp in a small line of lights. For the first two to three hours, the trail zigzags up a rocky slope and a steep gully, sometimes requiring the use of hands for balance. The air is thin and cold, and conversation stops as everyone focuses on breathing and footing.
At the crampon point, around dawn, you stop to put on crampons, clip into the rope with your guide and step onto the glacier. The glacier section takes about an hour, weaving between crevasses and seracs, and in some seasons crossing crevasses on aluminium ladders. As the sun rises, Lhotse's enormous face turns gold above you. Then you reach the foot of the headwall, a steep slope of snow and ice rising to the summit ridge. Clipping your ascender to the fixed rope, you climb slowly, taking a few steps, resting, and taking a few more. This is the hardest part of the day, often taking one to two hours.
At the top of the headwall, a short, narrow ridge with steep drops on both sides leads to the summit, marked by prayer flags. After celebrations and photos, you descend the headwall by abseiling or arm-wrapping on the fixed ropes, recross the glacier and scramble back down to base camp, arriving in the early afternoon, exhausted and elated.
Food and life at base camp
Island Peak Base Camp is a tented camp beside the Imja Glacier. Your climbing team sets up sleeping tents, a dining tent and a kitchen tent, and a cook prepares hot meals such as dal bhat, pasta, soups, noodles, eggs and porridge, with plenty of hot drinks. Nights at base camp are cold, often well below freezing, so a warm sleeping bag is essential. Some operators return climbers to Chhukung after the summit for a warmer night in a lodge.
Island Peak vs Lobuche East vs Mera Peak
Island Peak is often compared with the other popular trekking peaks in the Everest region. Lobuche East (6,119 m) is slightly lower but more technical, with steeper snow slopes and a more exposed summit ridge, and offers superb views of Everest. Mera Peak (6,476 m) is higher but less technical, with a long glacier walk and a short steep section near the top, and offers views of five 8,000 m peaks. Island Peak sits in the middle: more technical than Mera, less than Lobuche East, and conveniently combined with Everest Base Camp. Take a look at our comparison guide and Lobuche East climbing.
Environmental responsibility
The popularity of Island Peak has brought challenges, including waste at base camp and crowding on the fixed ropes. Choose an operator that follows strict leave-no-trace practices, carries out all waste and respects the garbage deposit system. Use toilet tents or waste bags where provided, avoid single-use plastics, and pack out batteries and gas canisters. Respect the mountain and the communities of the Khumbu, who depend on a healthy environment for their livelihoods.
What climbers say
Climbers who reach the summit of Island Peak often describe it as a life-changing moment. They remember the cold darkness of the early start, the effort of every step on the headwall, the fear and exhilaration of the narrow ridge, and above all the view of Lhotse's colossal face at sunrise. Many say that the combination of Everest Base Camp and Island Peak was the perfect Himalayan adventure, and some go on to climb bigger mountains. Even people who turn back usually say they're glad they tried.
Booking tips
Book at least three to four months ahead for spring and autumn, to secure flights, permits and experienced climbing guides. Choose an itinerary with proper acclimatisation and at least one reserve day for weather. Check exactly what is included: climbing permit, climbing Sherpa, group equipment, base camp tents and meals, and whether personal gear rental is included.
Nutrition and hydration on the climb
Eating and drinking enough is essential on a high climb. At altitude, appetite often drops, yet your body burns more energy than usual. In the days before the climb, eat plenty of carbohydrates, such as rice, pasta, potatoes and bread, and drink three to four litres of fluids a day. On summit day, carry at least one litre of warm water or tea in an insulated bottle, plus easily digestible snacks such as energy bars, chocolate, nuts and dried fruit. Eat a little every hour, even if you are not hungry. Dehydration and low energy are major reasons climbers fail to reach the summit.
Island Peak for women climbers
Many women climb Island Peak every season, and female climbing guides are increasingly available in Nepal. Training, acclimatisation and gear requirements are the same for everyone. Women-only departures and female guides can be arranged on request. Take a look at our guide to trekking in Nepal as a woman.
Insurance and rescue
Standard trekking insurance usually does not cover mountaineering. For Island Peak, you need a policy that explicitly covers climbing to at least 6,500 m, including the use of ropes, crampons and ice axes, and helicopter rescue from high altitude. In an emergency, helicopters can reach Chhukung and sometimes base camp in good weather. Keep your policy details with your guide.
Chhukung: the climbers' village
Chhukung, at about 4,730 m, is the last village before Island Peak Base Camp and a hub for climbers. Its lodges are busy in the climbing seasons with teams preparing gear, sharing stories and waiting for good weather. From Chhukung you look straight at Lhotse's south face, Ama Dablam and the Imja valley. Many climbers hike up Chhukung Ri (about 5,550 m) for acclimatisation, with panoramic views of Makalu and Island Peak. Rental shops in Chhukung supply boots, crampons and other gear, although quality varies, so it is better to arrange equipment in Kathmandu or Namche.
Photography
Photographers get sunrise on Lhotse from the glacier, climbers on the headwall, the narrow summit ridge and the view from the top. Keep your camera or phone warm inside your jacket, as cold drains batteries quickly, and secure it with a lanyard on the ridge.
Common mistakes on Island Peak
The most common mistakes are rushing acclimatisation to save days, arriving with poorly fitting rental boots, underestimating the cold on summit day, and not practising with the ascender before the headwall. Others ignore turnaround times or push on while feeling unwell. Take the training day seriously, dress warmly, eat and drink regularly on summit day, and trust your climbing guide's decisions. These simple habits greatly improve both safety and success.
A brief history of Island Peak
Island Peak was first climbed in 1953 by a British team that included Tenzing Norgay, as part of training for the successful Everest expedition that year. Since the 1980s, when it was opened as a trekking peak, it has become the most climbed peak of its kind in Nepal, introducing thousands of people to Himalayan mountaineering.
Weather and turnaround decisions
Summit days on Island Peak begin before dawn partly because weather usually deteriorates in the afternoon, with cloud and wind rising from the valleys. Your climbing guide will set a turnaround time, often around 10 or 11 a.m.; if you have not reached the summit by then, you turn back. Strong winds on the summit ridge, fresh snow increasing avalanche risk on the headwall, or poor visibility on the glacier are all reasons to postpone the attempt to a reserve day.
Is Island Peak right for you?
If you are fit, comfortable with heights, willing to train seriously and excited by the idea of standing on a Himalayan summit, Island Peak is an ideal first climb. Combined with Everest Base Camp, it offers the best of trekking and mountaineering in one journey. If you are unsure about technical sections, consider Mera Peak or Yala Peak first, or talk to our team for honest advice.
Should Island Peak be your first climb?
Island Peak makes a great first Himalayan summit: real mountaineering in a magnificent setting, and achievable with good preparation and an experienced team. Add Everest Base Camp and you have a trip to remember. Contact us to plan your Island Peak climb.