Cho Oyu | 2009 NW side

A USA expedition to Cho Oyu in 2009 via NW side, led by Willie Benegas. Summit reached on 21st September 2009. 2 members recorded.

Expedition Details

Field	Value
ID	6520
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY09302
Peak ID	CHOY
Year	2009
Season	3
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	USA
Leaders	Willie Benegas
Sponsor	Patagonian Brothers Cho Oyu Expedition 2009
Success 1	False
Success 2	False
Success 3	False
Success 4	False
Ascent 1	-
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	2009-09-09
Summit Date	2009-09-21
Summit Time	-
Summit Days	12
Total Days	14
Termination Date	2009-09-23
Termination Reason	7
Termination Notes	Abandoned at 7200m due to Collingson's pulmonary edema
High Point (m)	7200
Traverse	False
Ski	False
Paraglide	False
Camps	2
Fixed Rope (m)	0
Total Members	2
Summit Members	0
Member Deaths	0
Total Hired	0
Summit Hired	0
Hired Deaths	0
No Hired	True
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	True
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(09/09,4700m),ABC(13/09,5600m),C1(15/09,6250m),C2(21/09,7200m),xxx(21/09,7200m)
Route Notes	22nd down to ABC and 23rd to border. Collingson got pulmonary edema in C2 and they descended to ABC on 22nd. Benegas borrowed a bottle of oxygen from Swiss team led by Karl Kobler and Collingson used the oxygen in C1 on 22nd to ABC.
Accidents	Collingson altitude sickness
Achievement	-
Agency	Asian Trekking
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2460615
Year	2009
Summit Success	False
O2 Summary	Used
Route (lowercase)	nw side

Members

Field	Value
ID	48883
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY09302
Member ID	01
Peak ID	CHOY
Year	2009
Season	3
First Name	Guillermo (Willie)
Last Name	Benegas
Sex	M
Age	0
Birth Date	-
Year of Birth	1968
Calculated Age	41
Citizenship	USA
Status	Leader
Residence	Sandy, Utah
Occupation	Alpine guide
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	False
High Point (m)	True
Personal High Point (m)	7200
Summit Date 1	2009-09-21
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	14
HCN	0
Checksum	2437950
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	guillermo (willie) benegas
Year of Birth	1968
Year	2009
Age at Expedition	41
Role	Leader

Field	Value
ID	48884
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY09302
Member ID	02
Peak ID	CHOY
Year	2009
Season	3
First Name	John Carl
Last Name	Collinson
Sex	M
Age	0
Birth Date	-
Year of Birth	1992
Calculated Age	17
Citizenship	USA
Status	Climber
Residence	Snowbird, Utah
Occupation	Extreme skier
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	False
High Point (m)	True
Personal High Point (m)	7200
Summit Date 1	2009-09-21
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	True
O2 Notes	Used in C1 for pulmonary edema
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	1
Summit Term	6
HCN	0
Checksum	2446537
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	john carl collinson
Year of Birth	1992
Year	2009
Age at Expedition	17
Role	Member

2 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Guillermo (Willie) Benegas	M	1968	USA	Leader	Sandy, Utah	Alpine guide	Details Other expeditions
John Carl Collinson	M	1992	USA	Climber	Snowbird, Utah	Extreme skier	Details Other expeditions

References

0 recorded references.