- Who
- Boris Korshunov
- What
- 72:32 year(s):day(s)
- Where
- Nepal ()
- When
The oldest person to climb Cho Oyu without supplementary oxygen (male) was Boris Korshunov (Russia), born on August 31st, 1935. They accomplished this on October 2nd, 2007, at the age of 72 years and 32 days.
This record title was verified by the mountaineering expert Eberhard Jurgalski.
