Most climbs of the higher 8,0000ers without supplementary oxygen
- Who
- Nirmal "Nims" Purja
- What
- 9 total number
- Where
- Nepal
- When
- 18 May 2025
The most ascents of the world's five highest mountains without the use of bottled oxygen is 9, by Nirmal "Nims" Purja (Nepal/UK), between climbs of K2 on 16 January 2021 and Kangchenjunga on 18 May 2025.
Nims made his climbs on:
- Everest: 15 May 2022
- K2: 16 January 2021, 22 July 2022, 20 July 2023
- Kangchenjunga: 7 May 2022, 18 May 2025
- Lhotse: 16 May 2022
- Makalu: 5 June 2023, 5 May 2024
His climbs of Everest and Lhotse in May 2022 broke the record for the fastest traverse between the two highest mountains, at 25 hours 1 minute.