Concordia Trek

Hotel departure at 4 AM for the 20-minute drive to Islamabad airport. The Skardu flight departs in the 6 to 7 AM window and operates only in the early morning because thermal winds off the Karakoram valleys make afternoon landings at Skardu Airport unreliable. The Pakistan International Airlines ATR-72 turboprop carries 68 passengers. Luggage is weighed strictly at check-in with a 20 kilogram limit. The security and boarding process is straightforward. Bring your passport because it is your primary ID at domestic Pakistani airports.

The one-hour flight northeast to Skardu is genuinely spectacular on a clear morning. Request a window seat on the left side of the aircraft. After takeoff from Islamabad you quickly leave the plains and begin crossing the foothills of the Himalayas. About 40 minutes into the flight watch for Nanga Parbat at 8,126 metres to appear on the horizon. It is clearly distinguishable as the largest summit visible, rising above the surrounding range in a way that makes every other peak look small. The Indus River is visible in its gorge thousands of metres below as the plane descends toward Skardu Airport. Landing on the runway above the Indus with the Karakoram walls rising on three sides is an arrival unlike any other.

In Skardu you are transferred to your hotel in the town centre. Skardu at 2,228 metres is the capital of Baltistan district and the logistical hub for all Baltoro expeditions and treks. The town bazaar runs several hundred metres and is worth an afternoon walk: dried apricots, walnuts, and mulberries are piled in mounds at fruit sellers. Gear shops stock trekking equipment brought in from Islamabad. The Skardu Museum has a small but worthwhile collection of Balti artefacts and historical photographs of early mountaineering expeditions. An option for the afternoon is a visit to Kharpocho Fort above the town, a 30-minute uphill walk that gives a sweeping view over the Skardu Valley and the Indus River below. Tomorrow is a rest day before the Askole drive the following morning.

Today is your acclimatization day in Skardu and it matters more than it might seem. Your body adjusts to altitude across a curve of days, not hours. The adjustment at 2,228 metres is your first step up that curve and it will compound with each subsequent day at higher elevation. Do not skip this day by trying to push to Askole early. Walk slowly around Skardu town this morning. Climb to Kharpocho Fort if you did not go yesterday. The steady uphill walk of 30 to 40 minutes gains about 150 metres and is a gentle workout at this altitude that stimulates your cardiovascular system without stressing it.

Your guide uses this day to complete the permit paperwork at the Pakistan Alpine Club liaison office in Skardu. The Baltoro Glacier Trekking Permit requires your passport copies, photographs, and the group leader's signature on several forms. This process takes 2 to 3 hours including waiting time. While your guide handles this, you are free to explore at your own pace. Satpara Lake 8 kilometres south of town is a popular afternoon excursion reachable by taxi in 15 minutes. The lake sits at 2,636 metres with clear water and good mountain reflections. It also gets you 400 metres higher than Skardu, which is a useful acclimatization bonus. Shangrila Resort near the lake has a restaurant with good views where you can have lunch.

Tonight confirm all your equipment is packed correctly for the Askole drive tomorrow. Your main trekking bag goes onto the jeep roof and should be packed with everything you need for 14 nights camping. Keep a small daypack in the jeep cabin with snacks, water, a warm layer, your camera, and your documents. The drive to Askole is rough and long and the bags on the roof sometimes shift. Anything fragile or critical goes in the cabin bag. Wake-up tomorrow is at 5:30 AM for a 6 AM breakfast and 7 AM departure.

Breakfast at 6 AM in the hotel, jeeps loaded by 6:30 AM, departure by 7 AM. The drive to Askole village takes 4 to 5 hours covering about 100 kilometres. The first section follows the Indus River south from Skardu before crossing at Shigar Bridge and turning east up the Braldu River Valley. The road quality is good until Shigar Bridge and then progressively deteriorates as you enter the Braldu Valley gorge. The road was constructed in the 1980s specifically to support Baltoro expedition traffic and is carved into the cliff face for significant sections. In places the outer wheels of the jeep are within a metre of a several-hundred-metre drop to the Braldu River below. Experienced Skardu drivers handle this road daily without concern. The view down to the river is dramatic.

The Braldu River runs a distinctive milky green from glacial flour, the fine rock powder ground by glaciers upstream. The colour is caused by suspended particles of silica too small to filter out and harmless but unmistakable. Stop at Dassu village roughly halfway to Askole for a tea break. Basic chai (tea with milk and sugar) is available at small roadside teahouses. The air at Dassu at around 2,500 metres is noticeably fresher than Skardu and the valley walls tower above you. From Dassu the road enters its most dramatic section with the gorge narrowing and the road cuts becoming more spectacular. Paiju Peak begins to appear at the eastern end of the gorge as you approach Askole.

Askole at 3,050 metres is the last permanent village before the Baltoro Glacier starts. Approximately 700 people live here year-round in stone houses surrounded by small irrigated fields of wheat and potato. The village has a basic medical post, a school, and several guesthouses that cater to expedition teams. Your cook and porter team assembles here. Tonight is the last time you sleep with a roof over your head for 12 nights. The cook team prepares a hot dinner: rice, lentil daal, vegetable curry, and chapatti baked in the camp kitchen. After dinner your guide briefs the full team on tomorrow's early start and the route to Jhola Camp. Sleep by 9 PM.

First trekking day: Askole to Jhola Camp, approximately 14 kilometres, 5 to 7 hours. Wake at 5 AM, breakfast at 5:30 AM, start walking by 6:30 AM. The trail leaves Askole heading east on a sandy path above the Braldu River. The first two hours are relatively easy, traversing above the river on a well-defined trail through boulder fields and gravel flats. After about 90 minutes you reach the terminal moraine of the Baltoro Glacier, the steep ridge of rock debris pushed down by the glacier over millennia. Cross a wire bridge over the Braldu River just below the terminal moraine and begin the transition onto the glacier's lateral moraine on the left bank.

Moraine walking is the defining terrain type of the Baltoro. It is rocky, uneven, and requires constant attention to foot placement. There is no single clear path. Your guide and the porters, who have walked this route dozens of times, pick the best line through the rocks. The glacier ice is visible on your right side beneath a layer of dark grey rock debris. The Baltoro carries an unusual amount of surface rock due to the very high erosion rates in the Karakoram, where the mountains are still rising tectonically and the rock is frequently fractured. Look for the subtle signs that you are on ice: the rocking of large flat boulders when you step on them, the sound of running water beneath your feet, the occasional blue or white ice visible in crevasse openings between rocks.

Jhola Camp at 3,170 metres is a flat sandy area at the edge of the lateral moraine with room for a dozen or more tents. You arrive in early afternoon. The porter team arrives over a 1 to 2 hour window as different individuals walk at different speeds. Camp is set up by 3 PM. Dinner is at 6 PM. The sky at Jhola on a clear night is extraordinary. The Milky Way is a solid band across the sky and individual nebulae are visible with the naked eye. This level of sky darkness is now very rare from inhabited places and the Baltoro preserves it simply through its remoteness.

Jhola to Paiju Camp: 11 kilometres, approximately 5 to 6 hours. Leave camp at 7 AM. The route continues along the left bank moraine heading northeast. For the first hour the terrain is familiar moraine walking at a gentle grade. Then Paiju Peak begins to appear in earnest ahead of you. Paiju Peak at 6,610 metres is a technical rock and ice peak that dominates the southern skyline of the lower Baltoro for much of this section. Its steep north face drops 3,000 metres in a near-continuous sweep to the glacier below. The mountain was first climbed in 1977 by a Japanese expedition via the northeast ridge after numerous earlier attempts. Watching it grow larger through the morning walk is one of the sustained visual pleasures of this trekking day.

The Baltoro Glacier at this point is 2 to 3 kilometres wide and entirely fills the valley from bank to bank. The scale of the ice is difficult to comprehend. The glacier is 62 kilometres long and in its middle section over 300 metres thick. The rocky debris covering its surface makes it look more like a gravel plain than a glacier until a crevasse opens beside the trail and you can see the blue ice walls descending 30 or 40 metres below the surface. Crevasses on the Baltoro are generally covered by rock debris and not immediately obvious as hazards. Staying on the established lateral moraine route avoids the main crevasse zones on the central glacier surface.

Paiju Camp at 3,400 metres is the last green vegetation before Concordia. The camp occupies a strip of sandy and grassy ground beside a small clear stream. After two days of moraine grey, the presence of any vegetation feels significant. The stream runs off the southern valley wall rather than from the glacier, making it clear and cold rather than silty. Fill your water bottles here directly without treatment if you wish, this being one of the few points on the trek where the water source is clearly not glacial melt. The cook team makes the most of the Paiju location with a particularly good dinner tonight. Tomorrow is a rest day, which most people find they genuinely need by this point.

Rest day at Paiju Camp. This day is medically necessary, not optional padding. The altitude gain from Skardu (2,228 m) to Paiju (3,400 m) over three days has taxed your cardiovascular system and your body needs a full day without additional climbing stress to consolidate the acclimatization gains. Use the morning to sleep late, wash clothes in the stream (bring biodegradable soap only), or sit in the sun outside your tent. The cook serves breakfast through to 10 AM for rest day sleepers. The afternoon meal schedule is also relaxed. Eat more than you think you need today: your appetite may have been suppressed slightly at altitude and rest days are when the body rebuilds energy reserves.

An excellent use of 2 to 3 rest day hours is the hillside walk above camp. From Paiju a rough goat trail climbs 200 to 300 metres up the rocky hillside above the camp within 45 to 60 minutes one way. The view from the top of this climb is the first genuinely wide panoramic view of the trek: down the Baltoro toward Askole to the west, up toward the Trango Towers to the northeast, and across the glacier to the southern walls. The scale of the glacier system becomes comprehensible from this height in a way it is not while walking on it. Paiju Peak fills the upper half of the view to the east. The descent back to camp takes 30 minutes. This short climb to a viewpoint is the only altitude gain you should attempt today.

Your guide checks in with each trekker individually on rest days. Any persistent headache, loss of appetite, disrupted sleep, or unusual fatigue should be reported to the guide today rather than tomorrow when you are heading to higher altitude. Rest days are the right time to discuss altitude concerns because there is time to monitor symptoms before committing to higher camps. The guide also confirms the route briefing for tomorrow's walk to Urdukas and shows the group photographs of the Trango Towers taken from closer range so you know what to look for on the approach tomorrow.

Paiju to Urdukas: 14 kilometres, approximately 6 to 7 hours, with Urdukas sitting at 4,050 metres. Leave camp at 7 AM. The first major attraction of today's walk appears within 2 hours: the Trango Towers. The tower group consists of four main rock pillars on the northern bank of the Baltoro. Trango Nameless Tower at 6,286 metres is the tallest and most famous. Its east face is a vertical granite wall 1,200 metres high, one of the largest rock faces in the world. Climbers from across the world travel specifically to climb it. The difficulty rating of the standard routes (around 5.12 technical climbing) is amongst the hardest sustained rock climbing on any major peak.

The walk from Paiju toward Khoburtse and then Urdukas involves the best sustained views of the Trango Towers available from the trekking route. Over the course of 2 to 3 hours you see the towers from different angles as you move northeast. From directly below they look like perfectly vertical stone columns. From a more oblique angle the rock strata become visible, tilted geological layers that explain how such extreme vertical relief is possible. The sun on the east faces in the morning hours creates dramatic lighting contrasts between the sunlit rock and the shadow behind. This is the best photography opportunity of the first half of the trek.

Urdukas at 4,050 metres is one of the most scenically positioned camps on the Baltoro. The camp sits on a rocky ledge raised about 30 metres above the glacier surface, which gives a panoramic view looking both up and down the glacier. To the southwest you can see back past the Trango Towers toward the lower Baltoro. To the northeast the upper glacier stretches toward Concordia. From Urdukas the first distant glimpse of K2 is sometimes possible on very clear late afternoons, the dark pyramid shape at the far end of the glacier. Confirm with your guide whether K2 is visible from Urdukas today. If it is, this is the moment to see it for the first time from a distance, before the close-up views at Concordia and base camp make it overwhelming.

Urdukas to Goro II: 8 kilometres, approximately 5 to 6 hours, reaching Goro II at 4,270 metres. Leave at 7 AM. Today crosses from the mid-Baltoro section into the upper Baltoro and the landscape changes perceptibly. The rock debris covering the glacier decreases as you move into the higher parts of the system where the glacier surface has less time to accumulate fallen rock from the valley walls. White and pale blue ice appears more frequently underfoot. The glacier surface is wetter from summer melt. Watch for sudden crevasse openings between rocks even on the lateral moraine. Your guide identifies the safe walking line.

Masherbrum at 7,821 metres becomes clearly visible to the southeast today. Masherbrum is the 24th highest mountain in the world and one of the most recognised profiles in the Karakoram for its near-perfect four-sided pyramid shape. The mountain sits 15 kilometres south of the Baltoro Glacier and was first climbed by an American-Pakistani expedition in 1960 via the northwest ridge. From Goro II and the surrounding moraine it appears as an enormous clean-cut pyramid with steep ice couloirs running between its rock ridges. Its summit ridge is narrow and exposed at 7,821 metres. Further to the east, K6 at 7,282 metres and Chogolisa at 7,665 metres are both visible on clear days.

Goro II at 4,270 metres is the last camp before Concordia and the first where altitude sickness becomes a meaningful possibility for susceptible individuals. The camp sits directly on the glacier surface on a flat area of consolidated moraine. There is no shelter from wind and the nights at Goro II are cold even in July, typically dropping below minus 5 Celsius after midnight. Your sleeping bag rated to minus 20 keeps you comfortable at these temperatures with significant margin. Eat a full dinner, drink a full litre of water before sleeping, and report any unusual symptoms to your guide before bed. Tomorrow you reach Concordia.

Goro II to Concordia: 9 kilometres, approximately 4 to 5 hours, reaching Concordia at 4,691 metres. This is the walk that defines the Concordia Trek. Leave camp at 7 AM. The route crosses the upper Baltoro Glacier northeast from Goro II. The terrain here is a mix of consolidated moraine, gravel flats, and occasional open ice. K2 is directly visible ahead from Goro II when you leave camp, though at this distance it appears as one peak among several on the eastern skyline. As you walk northeast it grows larger. For 4 hours it grows larger. By the time you are 2 kilometres from Concordia it fills the upper quarter of the northeastern sky.

The final approach to Concordia has a specific geography. The Baltoro Glacier makes a slight left turn (northwest) around a rocky moraine promontory about 500 metres before Concordia. As you round this bend the view opens simultaneously to the north, northeast, and east. K2 is directly ahead in the north. Broad Peak appears to its right. The Gasherbrums emerge further east and right. Mitre Peak at 6,025 metres stands as a sharp pyramid to the south. You are standing at the confluence of the two largest glaciers in the Karakoram and looking at four of the six highest mountains on Earth from a single point. Almost every trekker who reaches this view stops walking involuntarily.

Camp at Concordia on the glacier moraine. The afternoon at Concordia is one of the finest in the trekking world for doing nothing: sitting outside your tent, drinking hot tea, and watching the light change on K2. The mountain is lit differently at every hour of the afternoon. The black rock of the Abruzzi Spur catches direct sunlight from midday through to late afternoon. The snow on the upper slopes reflects light even after the sun has dropped below the southern rim. In calm evening conditions with no wind, the glacier below the peaks is absolutely silent and the scene is completely still. This is what people who have been here try and fail to describe adequately to those who have not.

Rest day at Concordia at 4,691 metres before the K2 Base Camp walk. This day is the standard rest and acclimatization stop before the additional 460 metres to K2 Base Camp. Use the morning at camp. Walk the moraine area around camp slowly. Eat a full breakfast. Drink water consistently throughout the day regardless of thirst. At 4,691 metres the kidneys excrete water more rapidly and dehydration builds fast without the sensation of thirst that normally drives drinking behaviour. A practical guide: produce light-coloured or clear urine, not dark yellow. Dark yellow urine at altitude means drink more immediately.

The K2 summit visible from Concordia is 3,920 metres above you. From Concordia you can see approximately the lower third of the Abruzzi Spur, the standard route on the Pakistani side. The route goes up the lower rock buttresses of the southeast ridge, gains the shoulder called the Shoulder at about 7,900 metres, traverses across to the Bottleneck couloir at 8,300 metres, and then follows the final snow and rock to the summit at 8,611 metres. This is visible as a logical line from Concordia on a clear day with binoculars. Above the shoulder the mountain disappears into its own weather most afternoons. The summit itself is visible from Concordia about 30 percent of the time due to cloud formation around the summit pyramid.

Your guide briefs the group after dinner on the K2 Base Camp walk tomorrow. Key points: leave Concordia by 7 AM with only a daypack (main sleeping tent stays at Concordia), bring at least 2 litres of water, snacks for the full day, sunscreen rated SPF 50 or above, glacier glasses not sunglasses, warm layers for the base camp wind, and your camera. The walk is straightforward and well-established. Walking time to K2 Base Camp is 2 to 3 hours. Time at base camp is typically 2 to 3 hours. Return to Concordia takes 2 hours. Total day is 6 to 8 hours of light to moderate effort.

Concordia to K2 Base Camp: 8 kilometres gaining 460 metres, approximately 2.5 to 3 hours one way. Leave Concordia at 7 AM with daypacks only. The route heads north-northeast from Concordia camp onto the Godwin-Austen Glacier. The Godwin-Austen Glacier is narrower than the Baltoro and its surface is more ice-dominant with less covering rock debris. You walk on the right bank moraine where established. The glacier ice on your left is increasingly blue-white as you gain altitude and leave the main debris zones behind. K2 grows with every step in a way that is both measurable and overwhelming.

At approximately 5 kilometres from Concordia you cross onto the main glacier surface for a short section before regaining the moraine on the right bank. Your guide identifies the safest crossing point. The ice is firm underfoot and not slippery in the morning temperatures. By 2 kilometres from K2 Base Camp the mountain is directly above you and the sky is only mountain and not horizon on three sides. The Abruzzi Spur is visible in detail now: the lower snow slopes, the fixed rope sections on the steeper rock, and the high snow shoulder far above. If a current expedition has fixed lines in place on the lower route you can see them with binoculars.

K2 Base Camp at 5,150 metres is a flat moraine area at the very foot of the Abruzzi Spur. It is marked by decades of accumulated expedition debris: tent platforms built into the moraine by successive teams, fixed rope anchor points driven into the rock at the glacier edge, rusting oxygen cylinder fragments, and memorial plaques for climbers who died on the mountain since the first expedition in 1902. The plaques include names from the 1986 season when 13 climbers died in one storm event, from the 2008 collapse that killed 11 in two days, and from dozens of individual accidents across a century of attempts. Stand here, read the plaques, and take the time the place deserves.

Concordia to Goro II: 9 kilometres, approximately 4 to 5 hours. The return journey begins today. You retrace the Godwin-Austen Glacier connection from Concordia east, then turn southwest down the Baltoro toward Goro II. For much of the morning K2 is visible over your right shoulder. The mountain looks different from the southwest than from the northeast. The full Abruzzi Spur is in shadow in the morning light from this direction. The summit pyramid catches early sun on the southwest face and appears almost incandescent in the right conditions. Take a final long look at K2 from the Goro II approach because after today the peak will drop below the horizon behind you and not return until you are back in Skardu.

The return to Goro II is a familiar route walked in reverse. The landmarks appear in reverse order and the downhill gradient that was uphill on the approach feels easier on the lungs but demands more knee control. Your trekking poles, set 10 centimetres longer than for uphill, absorb the downhill impact on the knee joints. Pace yourself steadily. The temptation to walk fast on the familiar terrain of the return is real and the risk is a turned ankle or knee strain on the moraine. Many Baltoro injuries happen on the return journey when fatigue and overconfidence combine on the same rough terrain.

Goro II at 4,270 metres feels lower and warmer on the return than it did on the approach because your acclimatization has progressed and you have descended 420 metres from K2 Base Camp. Your appetite on the return is generally stronger than the approach because you are coming down from altitude rather than going up. The cook team makes a good dinner tonight. Tomorrow is the walk to Urdukas and the Trango Towers reappear ahead of you on the westward descent.

Goro II to Urdukas: 8 kilometres, approximately 4 to 5 hours. Return day two. Leave at 7 AM and head southwest on the moraine toward Urdukas. The Trango Towers appear on the horizon ahead of you within the first hour. Seeing them from the east on the return is different from seeing them from the west on the approach. The light and angle change the character of the rock faces. The Nameless Tower's east face, which was brilliant in morning light on the approach, is now in afternoon shadow on the return giving the rock a darker, more textured appearance. Some photographers prefer this evening/return light on the towers. Arrive at Urdukas in early afternoon.

At Urdukas on the return you have time to explore the camp area more thoroughly than on the approach when you arrived tired from the long Paiju-Urdukas day. Climb the rocky slope above camp for 15 to 20 minutes in the late afternoon. From this higher position, looking back northeast up the glacier, you can trace your route all the way to Concordia and in clear conditions see the turn in the glacier where K2 Base Camp lies beyond. The view of what you have walked and what lies behind you has a particular quality on the return: the knowledge that you have done it, compounded by the view of the distance involved.

Tonight at Urdukas is one of the last full camp nights before Askole. The dinners on the return tend to be more relaxed and celebratory than the approach nights. The cook team knows the trek is winding down and the morale of the group on the return is typically high. After dinner your guide leads an informal review of the trek highlights. Everyone shares their personal moments from the past 10 days on the glacier. This conversation is worth participating in actively. The stories you tell tonight are the ones you will tell at home for the rest of your life.