Everest vs K2: height, difficulty & death rate compared

Is K2 taller than Everest? No. Mount Everest is the highest mountain on Earth at 8,848.86 m, while K2 is the second-highest at 8,611 m – Everest is 237.86 m (780 ft) taller, a real gap, though not the reason K2 is the harder climb. The two sit in different ranges, and that isolation shapes everything that follows: weather, rescue, and cost. Everest rises in the Himalaya on the Nepal-Tibet border, approached through the well-developed Khumbu Valley. K2 stands far to the northwest in the Karakoram, on the Pakistan-China border at the head of the Baltoro Glacier – reached only after a 7-10 day trek from Askole through Concordia, one of the most remote and committing approaches in mountaineering.

Everest’s difficulty is altitude-dominant: its standard South Col route is non-technical, with fixed ropes running from base camp to summit and near-universal supplemental oxygen. A determined, well-prepared client with a good operator can realistically expect a summit attempt. K2 is altitude plus severe technique: even its standard Abruzzi Spur is graded TD, with sustained rock, ice, and mixed climbing from low on the mountain. Four things stack K2’s difficulty above Everest’s:

The consensus is clear: K2 is the hardest of the 14 eight-thousanders and sits near the top of the 10 hardest mountains in the world, while Everest is the most achievable 8,000er for a supported climber.

K2’s historical fatality rate is about 22-25% – roughly one death for every four summits (around 96 deaths against ~700 summits). Everest’s is about 1-3%, or roughly 1 in 95 (around 340 deaths against 13,700+ summits). K2 is, per climber, on the order of ten times deadlier. And K2’s ~25% rate is not a relic of old gear or weak operators – it persists in the modern commercial era, a reflection of the mountain’s inherent severity.

Everest sees hundreds of summits in a good season – its mature commercial system and ~29% success rate have put 13,700+ ascents in the record, from oxygen-free alpinists to fully supported clients. In peak weather windows, crowding itself becomes a hazard, with queues forming in the Death Zone. K2 is far more selective: many years see only a few dozen summits – some seasons none at all – for roughly 700 ascents in total, and a success rate near 14%. The climbers who reach the top almost always arrive with multiple prior eight-thousanders and Karakoram experience; K2 punishes any gap in skill or altitude tolerance. That selectivity is a large part of its reputation, and why it is never a sensible first – or even second – 8,000er.

A guided Everest expedition runs about $33,000-$120,000+, with the range driven by operator tier, oxygen, and Sherpa support. K2 typically runs $25,000-$90,000 – its smaller client numbers, higher failure rates, and harder logistics keep per-climber costs high even though far fewer people summit. The logistics diverge sharply: Everest’s spring season (April-May) is served by a mature ecosystem of operators, fixed-rope teams, and helicopter rescue to Camp 2; K2’s summer season (July-August) offers short, jet-stream-dependent windows, a long Baltoro approach, and a handful of specialist operators. Compare programs in our K2 climb guide, K2 operators, and Everest guide.

For nearly everyone else, the right move is the progression that leads toward either: build through accessible peaks and a first 8,000er first. Our 8,000ers ranked by difficulty, which mountain should you climb?, and 14 eight-thousanders guides map the path.