Cho Oyu | 2003 NW side

A Switzerland expedition to Cho Oyu in 2003 via NW side, led by Richard Bolt. Summit reached on 20th May 2003. 10 members recorded.

Expedition Details

Field	Value
ID	4237
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY03108
Peak ID	CHOY
Year	2003
Season	1
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	Switzerland
Leaders	Richard Bolt
Sponsor	Kobler & Partner Cho Oyu Expedition 2003
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	Lhasa->Shigatse->Tingri->BC
Basecamp Date	2003-04-27
Summit Date	2003-05-20
Summit Time	-
Summit Days	23
Total Days	27
Termination Date	2003-05-24
Termination Reason	4
Termination Notes	Abandoned at 7550m due to storm & weather conditions
High Point (m)	7550
Traverse	False
Ski	False
Paraglide	False
Camps	2
Fixed Rope (m)	0
Total Members	8
Summit Members	0
Member Deaths	0
Total Hired	2
Summit Hired	0
Hired Deaths	0
No Hired	False
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Taken	True
O2 Unknown	False
Other Summits	-
Campsites	BC(27/04,4900m),ABC(30/04,5700m),C1(05/05,6400m),C2(13/05,7050m),xxx(20/05,7550m)
Route Notes	C1 occupied by Bieter, Bolt, Brodard, Leuthold, Nussbaumer and Ongdi Sherpa. C2 occupied on May 13 by Bieter, Bolt, Brodard, Jost, Leuthold and Ongdi and Pasang. Ulrich left ABC on May 5 sore throat; left Nepal on/about May 7 or 8. Isepponi and Nussbaumer left ABC on May 13 due to exhaustion; left Nepal on 18th. The expedition waited and made attempt on 20th. They got up to 7550m (Bolt, Brodard and Ongdi together with Pasang). This was the last expedition to leave BC.
Accidents	-
Achievement	-
Agency	Iceland Trekking
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2458158
Year	2003
Summit Success	False
O2 Summary	None
Route (lowercase)	nw side

Members

Field	Value
ID	33010
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	02
Peak ID	CHOY
Year	2003
Season	1
First Name	Oliver
Last Name	Bieter
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	33
Citizenship	Switzerland
Status	Climber
Residence	Luzern, Switzerland
Occupation	Attorney
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	-
High Point (m)	False
Personal High Point (m)	7050
Summit Date 1	2003-05-13
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	3
HCN	0
Checksum	2438453
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	oliver bieter
Year of Birth	1969
Year	2003
Age at Expedition	34
Role	Member

Field	Value
ID	33011
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	01
Peak ID	CHOY
Year	2003
Season	1
First Name	Richard Markus
Last Name	Bolt
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	34
Citizenship	Switzerland
Status	Leader
Residence	Amden, St. Gallen, Switzerland
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	-
High Point (m)	True
Personal High Point (m)	7550
Summit Date 1	2003-05-20
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	4
Summit Term	3
HCN	0
Checksum	2438377
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	richard markus bolt
Year of Birth	1969
Year	2003
Age at Expedition	34
Role	Leader

Field	Value
ID	33012
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	03
Peak ID	CHOY
Year	2003
Season	1
First Name	Hubert
Last Name	Brodard
Sex	M
Age	0
Birth Date	-
Year of Birth	1952
Calculated Age	51
Citizenship	Switzerland
Status	Climber
Residence	La Roche, Fribourg, Switzerland
Occupation	Owner of meat wholesaling business
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	-
High Point (m)	True
Personal High Point (m)	7550
Summit Date 1	2003-05-20
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	4
Summit Term	3
HCN	0
Checksum	2432151
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hubert brodard
Year of Birth	1952
Year	2003
Age at Expedition	51
Role	Member

Field	Value
ID	33013
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	04
Peak ID	CHOY
Year	2003
Season	1
First Name	Franco
Last Name	Isepponi
Sex	M
Age	0
Birth Date	-
Year of Birth	1947
Calculated Age	55
Citizenship	Switzerland
Status	Climber
Residence	Iamins, Switzerland
Occupation	Civil engineer
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	-
High Point (m)	False
Personal High Point (m)	0
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
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	7
HCN	0
Checksum	2430501
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	franco isepponi
Year of Birth	1947
Year	2003
Age at Expedition	56
Role	Member

Field	Value
ID	33014
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	05
Peak ID	CHOY
Year	2003
Season	1
First Name	Roland
Last Name	Jost
Sex	M
Age	0
Birth Date	-
Year of Birth	1966
Calculated Age	36
Citizenship	Switzerland
Status	Climber
Residence	Luzern, Switzerland
Occupation	Mechanic
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	-
High Point (m)	False
Personal High Point (m)	7050
Summit Date 1	2003-05-13
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	3
HCN	0
Checksum	2437440
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	roland jost
Year of Birth	1966
Year	2003
Age at Expedition	37
Role	Member

Field	Value
ID	33015
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	06
Peak ID	CHOY
Year	2003
Season	1
First Name	Christian M.
Last Name	Leuthold
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	48
Citizenship	Switzerland
Status	Climber
Residence	Zurich, Switzerland
Occupation	Attorney
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	-
High Point (m)	False
Personal High Point (m)	7050
Summit Date 1	2003-05-13
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	3
HCN	0
Checksum	2433141
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	christian m. leuthold
Year of Birth	1954
Year	2003
Age at Expedition	49
Role	Member

Field	Value
ID	33016
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	07
Peak ID	CHOY
Year	2003
Season	1
First Name	Patrick (Pat)
Last Name	Nussbaumer
Sex	M
Age	0
Birth Date	-
Year of Birth	1971
Calculated Age	31
Citizenship	Switzerland
Status	Climber
Residence	Zug, Switzerland
Occupation	Technician and climber
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	-
High Point (m)	False
Personal High Point (m)	6400
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
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	7
HCN	0
Checksum	2439129
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	patrick (pat) nussbaumer
Year of Birth	1971
Year	2003
Age at Expedition	32
Role	Member

Field	Value
ID	33017
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	08
Peak ID	CHOY
Year	2003
Season	1
First Name	Alois
Last Name	Ulrich
Sex	M
Age	0
Birth Date	-
Year of Birth	1945
Calculated Age	57
Citizenship	Switzerland
Status	Climber
Residence	Zurich, Switzerland
Occupation	Architect
Leader	False
Deputy	False
Basecamp Only	True
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	-
High Point (m)	False
Personal High Point (m)	5700
Summit Date 1	-
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	0
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	9
HCN	0
Checksum	2429677
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	alois ulrich
Year of Birth	1945
Year	2003
Age at Expedition	58
Role	BC Only

Field	Value
ID	41958
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	09
Peak ID	CHOY
Year	2003
Season	1
First Name	Ongdi
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Nepal
Status	H-A Worker
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	7550
Summit Date 1	2003-05-20
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	4
Summit Term	3
HCN	0
Checksum	17
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	ongdi sherpa
Year of Birth	-
Year	2003
Age at Expedition	-
Role	Hired

Field	Value
ID	41959
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03108
Member ID	10
Peak ID	CHOY
Year	2003
Season	1
First Name	Pasang
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	-
Calculated Age	0
Citizenship	Nepal
Status	H-A Worker
Residence	-
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	False
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	7550
Summit Date 1	2003-05-20
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	4
Summit Term	3
HCN	0
Checksum	17
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	pasang sherpa
Year of Birth	-
Year	2003
Age at Expedition	-
Role	Hired

10 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Oliver Bieter	M	1969	Switzerland	Climber	Luzern, Switzerland	Attorney	Details Other expeditions
Richard Markus Bolt	M	1969	Switzerland	Leader	Amden, St. Gallen, Switzerland	Alpine guide	Details Other expeditions
Hubert Brodard	M	1952	Switzerland	Climber	La Roche, Fribourg, Switzerland	Owner of meat wholesaling business	Details Other expeditions
Franco Isepponi	M	1947	Switzerland	Climber	Iamins, Switzerland	Civil engineer	Details Other expeditions
Roland Jost	M	1966	Switzerland	Climber	Luzern, Switzerland	Mechanic	Details Other expeditions
Christian M. Leuthold	M	1954	Switzerland	Climber	Zurich, Switzerland	Attorney	Details Other expeditions
Patrick (Pat) Nussbaumer	M	1971	Switzerland	Climber	Zug, Switzerland	Technician and climber	Details Other expeditions
Alois Ulrich	M	1945	Switzerland	Climber	Zurich, Switzerland	Architect	Details Other expeditions
Ongdi Sherpa	M	-	Nepal	H-A Worker	-	-	Details Other expeditions
Pasang Sherpa	M	-	Nepal	H-A Worker	-	-	Details Other expeditions

References

0 recorded references.