Climbers who have reached the summit of all 14 eight-thousanders

Field 0₂ lists people who have peaked all 14 without bottled oxygen.

Order accomplished	All without O2 (order)	Name	Period	born	at age	Nationality
1	1	Reinhold Messner	1970-1986	1944	42	Italian
2		Jerzy Kukuczka	1979-1987	1948	39	Polish
3	2	Erhard Loretan	1982-1995	1959	36	Swiss
4		Carlos Carsolio	1985-1996	1962	33	Mexican
5		Krzysztof Wielicki	1980-1996	1950	46	Polish
6	3	Juanito Oiarzabal	1985-1999	1956	43	Spanish
7		Sergio Martini	1983-2000	1949	51	Italian
8		Young Seok Park	1993-2001	1963	38	Korean
9		Hong Gil Um	1988-2001	1960[6]	40	Korean
10	4	Alberto Iñurrategi	1991-2002[7]	1968	33	Spanish
11		Wang Yong Han	1994-2003	1966	37	Korean
12	5[8]	Ed Viesturs	1989-2005	1959	46	American
13	6[9][10][11]	Silvio Mondinelli	1993-2007	1958	49	Italian
14	7[12]	Ivan Vallejo	1997-2008	1959	49	Ecuador
15	8 [13]	Denis Urubko	2000-2009	1973	35	Kazakhstan
16		Ralf Dujmovits	1990-2009	1961[14]	47	German
17	9	Veikka Gustafsson	1993-2009	1968	41	Finnish

List: Courtesy of himalman.wordpress.com and wikipedia