Project Possible 14/7
With a plan to complete all 14 eight-thousanders in seven months, Purja summited the first mountain on 23 April 2019 and completed the first six-summit phase of his "Project Possible 14/7" on 24 May 2019: Annapurna, Dhaulagiri, Kangchenjunga, Mount Everest, Lhotse, and Makalu. He climbed with Sherpas Mingma Gyabu "David" Sherpa, Lakpa Dendi (Zekson Son), Geljen Sherpa and Tensi Kasang, among other mountaineers. The last five summits were climbed in only 12 days. He broke his previous Guinness World Record by climbing Everest, Lhotse, and Makalu within 2 days and 30 minutes.
Purja completed the second phase in July 2019, climbing Nanga Parbat (8126 m, 3 July), Gasherbrum I (8080 m, 15 July), Gasherbrum II (8034 m, 18 July), K2 (8611 metres, 24 July) and Broad Peak (8047 m, 26 July), all in Pakistan.
The third and final phase began in September 2019. He summitted Cho Oyu (8188 m, Tibet) on 23 September and Manaslu (8163 m, Nepal) on 27 September. On 1 October 2019, Chinese authorities granted Purja and his team a special permit to climb Shishapangma (8027 m, Tibet, China) in the autumn season, at the request of the Nepali government. Purja left Nepal for Tibet on 18 October 2019, leading a five-member expedition, and completed Project Possible 14/7 with a successful summit on 29 October using supplemental oxygen.
Research published in 2022 noted that during Project 14/7, Purja had stopped at the rocky fore summit of Dhaulagiri and at the ridge point on Manaslu.
In addition to the fastest ascent of the 14 tallest mountains with supplemental oxygen, Purja broke several further records: most 8,000 m mountains climbed in the spring season (six); most 8,000 m in the summer season (five); fastest summit of the three highest mountains in the world, (Everest, K2 and Kangchenjunga; fastest summit of the five highest mountains in the World, Everest, K2, Kangchenjunga, Lhotse and Makalu); fastest lower 8000ers, (Gasherbrum I, II, and Broad Peak); and fastest higher 8,000ers, with consecutive summits of Everest, Lhotse and Makalu in 48 hours (beats his own previous record of five days).
During Project Possible in May 2019, a photo taken by Purja of overcrowding on Everest went viral and was published in The New York Times.
Project Possible was documented in the Netflix film 14 Peaks: Nothing Is Impossible, released on 29 November 2021.