Table of Contents
How Many People Have Climbed K2? (2026 Update)
No one knows exactly how many different people have climbed K2, but most guides put the figure at about 800 to 850. A separate compilation records 964 summit ascents through the end of 2025. The two numbers measure different things: one is meant to count people, the other counts every successful summit, including repeat ascents. No one reached the summit in 2026, so as of October 2026 neither total has grown this year.
That gap, together with differing cutoff dates, explains most of the confusion online. Every page that gives one clean number is quietly choosing a definition and a date. This guide separates people from ascents, shows the pattern year by year, and explains how to judge any K2 statistic you come across.
How Many People Have Climbed K2 in Total?
The most commonly cited estimate is 800 to 850 different summiters. Wikipedia gave an estimated 800 as of August 2023, and several current guides repeat the 800 to 850 range. Treat it as an approximation, not an official census. No single body counts every K2 summit, and none of the sources reviewed explains how the range was built. As Alan Arnette noted in 2022, Pakistan has no free, regularly updated public database of summits comparable to the Himalayan Database for Nepal and Tibet.
There is a reason for caution. Adding the annual counts in one published table gives roughly 850 ascents through 2023 and about 940 through 2025. The first total sits close to the August 2023 estimate of 800 people, and the second sits close to the 964 recorded ascents. This is my own arithmetic, not a published finding, but it suggests the 800 to 850 range may track ascents at an earlier date as much as it tracks different people.
Older figures are clearly out of date. Climbing magazine put the total at about 377 before the 2021 season, without saying whether that counts people or ascents. Then 2022 alone produced roughly 200 summits, so any page still quoting a figure in the 300s is stale.
What Is the Difference Between K2 Climbers and Summit Ascents?
A climber is a person. An ascent is one person reaching the summit once. If the same guide summits in four different seasons, that is one climber and four ascents.
This matters on K2 because commercial teams rely on Sherpa guides and Pakistani porters who work at high altitude and return season after season. On the record day in 2022, Arnette’s tally counted 88 Sherpa and Pakistani support climbers alongside 54 clients. A list of ascents counts the same professionals again and again, while a list of different people counts each once. The number of people must therefore be lower than the number of ascents, though the sources reviewed do not say by how much.
How Many K2 Summit Ascents Have Been Recorded?
One compilation reports 964 recorded summit ascents through December 31, 2025. Broad Peak Adventures published the same 964 figure with a mid August 2025 cutoff. The two dates may not conflict, because the last summits of the 2025 season came on August 11 and 12, so a mid August count could already include every ascent that year. The sources do not confirm this, so the safest wording is “964 recorded ascents through 2025.”
Some 2026 pages claim more than 1,000 ascents without showing records. That is hard to square with 964 through 2025 and no summits in 2026, so this guide treats the figure as unverified. For the same reason, the 964 figure should be unchanged as of October 2026, apart from any later corrections to historical records.
Here is how the common figures fit together:
| Figure | What it measures | How to use it |
|---|---|---|
| About 800 to 850 | Widely repeated estimate of different summiters; method not documented | Rough answer to “how many people” |
| 964 | Recorded summit ascents, including repeats, through 2025 | Best answer to “how many summits” |
| More than 1,000 | Total claimed by some 2026 pages; no records shown | Treat as unverified |
| About 377 | Total before 2021 per Climbing magazine; people or ascents not stated | Historical baseline only |
How Many People Climb K2 Each Year?
There is no typical year. Annual totals have ranged from none to about 200, and the swing comes mostly from weather windows and how many commercial teams arrive.
| Year | Summits (approximate) | What happened |
|---|---|---|
| 1986 | 26 to 27 | Year of the deadly “Black Summer” |
| 2004 | 47 to 51 | One of the busiest years before 2018; 28 of 47 summiters reportedly used oxygen |
| 2012 | 30 | 28 reached the top on a single day |
| 2018 | 62 | Record until 2022 |
| 2021 | About 58 | First winter ascent in January; tallies vary by source |
| 2022 | About 200 | Record year; about 145 in a single push around July 22 |
| 2023 | About 112 | Many on a single day, July 27 |
| 2024 | About 50 to 65 | Sources disagree; Arnette reported around 65 |
| 2025 | 41 to 42 | Two tallies, see below |
| 2026 | 0 | No successful summit |
These are estimates, and compilers differ by a few climbers or more in several years. Because there is no official public count, most totals come from Arnette’s running tallies and expedition reports. As of 2022, Arnette counted 32 years since 1954 with no K2 summits at all. The mountain’s reputation for empty seasons is earned, and 2026 added another.
The 2022 jump had a clear cause. Nepali outfitters brought the Everest model to K2, with fixed ropes to the top, large Sherpa teams and heavy use of supplemental oxygen. Arnette’s verdict at the time was that the Everest model had arrived on K2.
How Many People Climbed K2 in 2025?
About 41 to 42 climbers summited K2 in 2025. Dragon’s Trails reports 41, while Arnette’s season recap lists 42 summits and two deaths. His count reached 42 after French climber Serge Hardy said on August 12 that he had summited alone, so the difference may come down to that one claim, though the sources do not say so. Quote the range or name the source.
Everest Chronicle and HUM News reported that Nepali guide Siddhi Bahadur Tamang reached K2 for the seventh time on August 11, 2025, while working on the rope fixing team. Guinness World Records currently lists six ascents for Tamang, so the seventh ascent should be attributed to the 2025 expedition reports rather than presented as an uncontested world record.
Did Anyone Summit K2 in 2026?
No. K2 saw zero successful summits in summer 2026. Arnette’s August season wrap up reached the same conclusion, estimating that only around 50 people attempted the mountain. As of late October 2026, the summer season is closed and no source reviewed contradicts this.
Alan Arnette reported that the only team still hoping to summit K2, led by Mingma G and positioned at Camp 3, abandoned its plans after hearing about the Broad Peak avalanche on July 30 and began descending the next morning to assist with the search. Reuters and the BBC reported that the avalanche killed ten climbers, including Nirmal Purja. These were Broad Peak fatalities, not K2 deaths.
How Many People Have Attempted to Climb K2?
No source reviewed gives a reliable lifetime attempt total, so treat any such figure with caution. Permits, attempts and summits are three different measures:
- Permits are what Pakistan issues. About 207 were issued for K2 in 2022, and 175 were registered by early July 2024.
- Attempts are people who actually climb high on the mountain. Arnette’s unofficial estimate for 2026 was roughly 50.
- Summits are people who reach the top, and they are the smallest group.
In 2019, at least 100 climbers held permits and about 30 summited, a rate near 30 percent. Some operators now quote higher success rates by counting only climbers who left high camp for the summit push, which raises the percentage without changing the result.
How Many People Have Climbed K2 Without Oxygen?
No credible lifetime total exists in the sources reviewed, so none is given here. The available yearly counts do suggest that the share of summiters skipping supplemental oxygen has fallen. In 2004, 28 of 47 summiters reportedly used oxygen, which would mean 19 did not. In 2019, at least seven of the 30 or so summiters climbed without it. Arnette’s 2025 recap names at least four, including two on the Imagine Nepal team. The share appears to have fallen as commercial teams grew.
Notable examples include Gerlinde Kaltenbrunner on the north side in 2011, Nirmal Purja on the first winter ascent in 2021, and Tommaso Lamantia, who reportedly summited alone and without bottled oxygen in 2024. Ascents without oxygen date to the late 1970s. If you are writing about this, name the specific climber and year rather than a total.
Who Has Climbed K2 the Most Times?
Siddhi Bahadur Tamang holds the documented record with seven summits, the latest on August 11, 2025. Nobody summited in 2026, so the record stands as of October 2026, but records like this change, so check recent expedition reports before repeating it.
Josef Rakoncaj was the first person to summit twice, in 1983 and 1986. Repeat ascents were rare for decades, and the rise of commercial guiding is what made multiple summits possible for professionals like Tamang.
When Was K2 First Summited?
Lino Lacedelli and Achille Compagnoni reached the summit on July 31, 1954, via the Abruzzi Spur, on an Italian expedition led by Ardito Desio. The ascent remains controversial. The two moved their high camp above the agreed spot, which forced Walter Bonatti and the Hunza porter Amir Mehdi to spend the night in the open above 8,000 meters. Mehdi suffered severe frostbite and lost toes.
The next successes came slowly. A Japanese team made the second ascent in 1977, and an American team made the third in 1978 on the Northeast Ridge. The first winter ascent did not happen until January 16, 2021, when ten Nepali climbers summited together.
Why Do Sources Report Different K2 Summit Totals?
Four questions explain nearly every disagreement:
- Is it people or ascents? Check how the figure is defined, and be wary when a source does not say.
- What is the cutoff date? A total as of August 2023 will always be lower than one through 2025.
- Who is included? Some datasets count only clients, while others include Sherpa guides and porters.
- How was the summit confirmed? Late reports, disputed summits and unconfirmed descents cause small differences, as with 2025’s 41 versus 42.
For serious verification, 8000ers.com maintains ascent lists, and Alan Arnette’s season coverage is the most detailed running record. When you cite a K2 number yourself, state what it counts and when it was last checked.
Frequently Asked Questions
How many people summit K2 in a typical year?
There is no typical year. Since 2018, seasons that produced summits have ranged from about 30 to about 200, and 2026 produced none. Weather decides whether climbers get a safe window.
Has anyone climbed K2 in winter?
Yes. Ten Nepali climbers reached the summit on January 16, 2021, in K2’s first winter ascent. Our guide to the first winter ascent of K2 by the Nepali team explains the expedition in more detail. Nirmal Purja was the only team member who summited without supplemental oxygen. None of the sources reviewed report a later winter ascent. The same winter season also cost several climbers their lives.
How many people have died climbing K2?
Sources put the figure at roughly 90 to 100. Wikipedia cited 96 as of August 2023, while Broad Peak Adventures listed 92 through August 2025. Because deaths cannot decrease over time, the lower, later number points to compilers using different criteria.
Before 2021, the commonly cited historical comparison was roughly one death for every four people who reached K2’s summit. This is a death to summit ratio, not the probability that an individual climber will die during an attempt. Published death totals also differ by source and cutoff date. Wikipedia cited 96 deaths as of August 2023, while the compilation used in our K2 death rate analysis records 92 through December 31, 2025. These figures come from different compilations and should not be treated as one continuous official record. For the detailed calculations, data sources, and limitations, see our K2 death rate analysis.
Has K2 been climbed more than Everest?
No. Everest has well over 10,000 recorded summit ascents, while K2 has fewer than 1,000. K2’s steep terrain, short weather windows, remote access, and hazards such as the Bottleneck on K2 make expeditions especially challenging.
Has anyone climbed the East Face of K2?
No. The East Face has no recorded ascent, and expeditions that have studied it report unstable snow and ice and serious avalanche danger.
Where can I verify current K2 summit numbers?
Start with 8000ers.com for ascent lists and Alan Arnette’s season reports for yearly counts. For any figure, check whether it counts people or ascents and note its cutoff date.
