He initially started his climbing career working as a porter for foreign climbers but in 2016 he was sponsored by the Nepalese climber
Mingma Sherpa for an expedition to climb K2. Although the duo failed in their attempt but in October 2017 Sirbaz successfully summited
Nanga Parbat becoming the first to climb the mountain in autumn season. In July 2018, Sirbaz climbed the tall
K2 — the second-tallest mountain in the world. In May 2019, Sirbaz became the first Pakistani to successfully summit the high
Mount Lhotse – the world’s 4th highest mountain - without using
supplementary oxygen. In July 2019, Sirbaz climbed the summit of the
Broad Peak mountain in Pakistan, without using supplementary oxygen. In September 2019, Sirbaz became the first Pakistani to scale
Mount Manaslu, the world's 8th highest peak, in Nepal. In April 2021, Sirbaz and Muhammad
Abdul Joshi became the first Pakistanis to scale the 8,091-metre
Annapurna peak in Nepal, the 10th highest mountain in the world. In May 2021, Sirbaz reached the summit of the world's highest peak
Mount Everest, in Nepal. In July 2021, Sirbaz successfully climbed the high
Gasherbrum-II, the world's 13th-tallest peak. In October 2021, Sirbaz climbed the high
Dhaulagiri mountain in Nepal. In May 2022, Sirbaz climbed the world's 3rd-highest peak,
Kanchenjunga, in Nepal. Later in May, Sirbaz summited the high
Mount Makalu in Nepal, the world's 5th highest peak. In July 2022, Sirbaz climbed the high
K2 — the 2nd highest mountain in the world. In August 2022, Sirbaz successfully climbed the high
Gasherbrum-I, the 11th highest mountain in the world. In October 2023, Sirbaz summited the world’s sixth-highest peak,
Cho Oyu (8,201 metres), in
Tibet. Later in October 2023, Sirbaz Khan and
Naila Kiani called off their attempted ascent of
Shishapangma peak in
Tibet, after surviving an
avalanche near its summit. In May 2024, Sirbaz reached the summit of the world's highest peak
Mount Everest, in Nepal without using supplemental oxygen. In September 2024, Sirbaz and
Shehroze Kashif began their final ascent to
Shishapangma the last of the world's 14
eight-thousander's peak and on 3 October, they successfully reached the summit making Sirbaz the first Pakistani to climb all 14 of the eight thousander mountains. In May 2025, Sirbaz reached the summit of
Kangchenjunga and became the first Pakistani to climb all 14 of the
eight-thousanders without supplemental oxygen. == References ==