The Baltoro Glacier. Concordia. Four 8,000m peaks in a single view. The greatest wilderness walk on Earth.
The K2 Base Camp trek is not a hike. It is an expedition on foot through one of the most remote and spectacular landscapes on the planet. The Baltoro Glacier — 63km long, the longest glacier outside the polar regions — is your path. Along it, you walk past Trango Towers, Cathedral Peaks, Lobsang Spire, and Masherbrum before arriving at Concordia, where four 8,000m peaks converge in a single visual field: K2, Broad Peak, Gasherbrum I, and Gasherbrum II.
K2 (8,611m) is Earth's second highest mountain, but in the view from its base camp it feels like the highest — it is dramatically steeper and more pyramidal than Everest, rising from glacier to summit without the false summits and rounded ridges that make Everest feel approachable from a distance.
I haven't done the full K2 BC trek — I'll be honest about that. But I've spoken to dozens of people who have, arranged logistics for groups going in, and know the Skardu end of this operation well. What follows is accurate to the best of my knowledge and contacts.
| Start/end point | Askole village, 3 hours from Skardu by jeep |
| Total distance | ~120km roundtrip (Askole → K2 BC → Askole) |
| Duration | 18–21 days total depending on rest days and itinerary |
| Max altitude | K2 BC: ~4,950–5,150m. Concordia: ~4,500m. |
| Best months | June, July, August (in that order of quality) |
| Permits | Restricted-Area trekking permit required (licensed operator + guide mandatory, no solo). Fees vary by nationality and year — confirm current rates with a licensed operator. |
| Porters | Mandatory above Concordia for foreign trekkers. Hire in Askole or pre-arrange in Skardu. |
| Guide | Mandatory — a licensed guide is required throughout (no solo trekking). Arrange through a licensed operator. |
| Self-organised cost | Varies widely with group size and service level — get a current written quote from a licensed operator. |
| Agency cost | Varies with service level — confirm a current quote for your dates and group size. |
Skardu → Askole (Day 0): 3-hour jeep drive from Skardu to Askole (3,015m) — the last village with any infrastructure. Buy final supplies here. Meet porters. Permits checked.
Askole → Jhola → Paiju (Days 1–3): The first stretch follows the Braldu River gorge. Rocky paths, river crossings, increasingly dramatic canyon walls. Paiju (3,400m) is the last vegetation before the glacier — rest day here is important for acclimatisation.
Paiju → Baltoro Glacier Entry → Urdukas (Days 4–6): The glacier begins at Khoburtse. The walk on ice is morainal — rocky debris on top makes it feel like hiking on rough ground rather than ice, but the glacier is always there. Urdukas (4,050m) has epic views.
Urdukas → Concordia (Days 7–9): The route deepens into the glacier. Trango Towers appear. Cathedral Group appears. You are now in the middle of the greatest concentration of high peaks on Earth. Concordia (~4,500m) is the junction of three glaciers — K2 is directly ahead.
Concordia → K2 BC (Day 10): 15km across glacier to K2 BC (5,150m). The mountain grows with every step. At base camp, you are at the foot of a mountain whose summit is 3,461m directly above you.
Islamabad- and Lahore-based agencies charge a significant premium over a trek arranged directly from Skardu — much of that gap is project-management margin rather than a different experience on the mountain. But day-rates, permit fees and the exchange rate all shift year to year, so don't anchor to any fixed figure: get a current written quote from a licensed operator for your exact dates and group size. The components below are what the total is built from.
| Restricted-Area trekking permit | Required; fees differ by nationality and change year to year — confirm the current rate with a licensed operator. |
| Jeep Skardu → Askole return | Per full jeep (shared across the group); rate varies — confirm locally. |
| Porter (per person per day) | Paid per porter per day, plus their food and equipment; the largest line item on a long trek. |
| Guide (mandatory) | Charged per day; a licensed guide is required throughout. |
| Camp cook | Charged per day for a multi-week expedition-style trek. |
| Food (self-catered) | Weeks of trail food and fuel, depending on camp food choices. |
| Emergency evacuation insurance | Essential at this altitude and remoteness; mandatory for foreigners. Confirm cover and cost before travel. |
The K2 BC trek has several topics that deserve dedicated pages:
Also worth reading: Concordia trek guide (14 days, turns back at Concordia instead of K2 BC) and Gondogoro La traverse (crosses from Hushe Valley to Concordia for a one-way circuit).