Cho Oyu | 1997 NW side from N

A Japan expedition to Cho Oyu in 1997 via NW side from N, led by Michihiro Kadoya. Summit reached on 26th September 1997. 6 members recorded.

Expedition Details

Field	Value
ID	2419
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY97306
Peak ID	CHOY
Year	1997
Season	3
Host Country	2
Route 1	NW side from N
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Michihiro Kadoya
Sponsor	Senshu Alpine Club Cho Oyu Expedition 1997
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	261
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	KTM->Tingri->BC
Basecamp Date	1997-09-01
Summit Date	1997-09-26
Summit Time	-
Summit Days	25
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	4
Summit Members	3
Member Deaths	0
Total Hired	2
Summit Hired	2
Hired Deaths	0
No Hired	False
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(01/09,4800m),ABC(05/09,5700m),C1(07/09,6400m),C2(15/09,7100m),C3(19/09,7500m),Smt(26/09)
Route Notes	Saw Everest, Lhotse, Makalu from top. Took 50 minutes from "the hump." Left a yellow oxygen bottle on the top with silver lid. Did not see anything on top. 5 or 6 Italians were going up when they came down spent 30 minutes in the summit. Kadoya & Dawa slept at C2 on 25th. Started at 2:30 am CST from C2. Tsubosa and Maeda, Man Bahadur slept at C3 on 25th. Started at 3:30 am CST from C3. All returned to C2. Were the first to reach the summit on the 26th.
Accidents	-
Achievement	-
Agency	Cosmo Treks
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	-
Primary ID	-
Checksum	2456450
Year	1997
Summit Success	True
O2 Summary	Used
Route (lowercase)	nw side from n

Members

Field	Value
ID	6051
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	01
Peak ID	CHOY
Year	1997
Season	3
First Name	Michihiro
Last Name	Kadoya
Sex	M
Age	0
Birth Date	-
Year of Birth	1963
Calculated Age	33
Citizenship	Japan
Status	Leader
Residence	Sakai, Osaka, Japan
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	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1997-09-26
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	261
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	5
Summit Term	1
HCN	0
Checksum	2436201
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	michihiro kadoya
Year of Birth	1963
Year	1997
Age at Expedition	34
Role	Leader

Field	Value
ID	6052
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	02
Peak ID	CHOY
Year	1997
Season	3
First Name	Mineo
Last Name	Kitayama
Sex	M
Age	0
Birth Date	-
Year of Birth	1975
Calculated Age	22
Citizenship	Japan
Status	Climber
Residence	Tondabayashi, Osaka, Japan
Occupation	Student
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	False
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	0
Summit Term	0
HCN	0
Checksum	2440479
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	mineo kitayama
Year of Birth	1975
Year	1997
Age at Expedition	22
Role	Member

Field	Value
ID	6053
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	03
Peak ID	CHOY
Year	1997
Season	3
First Name	Katsuji
Last Name	Maeda
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	28
Citizenship	Japan
Status	Climber
Residence	Minami-Sumiyoshi, Osaka, Japan
Occupation	Architect
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1997-09-26
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	261
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	From C3 to top & sleeping at C3
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	5
Summit Term	1
HCN	0
Checksum	2438225
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	katsuji maeda
Year of Birth	1969
Year	1997
Age at Expedition	28
Role	Member

Field	Value
ID	6054
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	04
Peak ID	CHOY
Year	1997
Season	3
First Name	Keiko
Last Name	Tsubosa
Sex	F
Age	0
Birth Date	-
Year of Birth	1959
Calculated Age	38
Citizenship	Japan
Status	Climber
Residence	Tondabayashi, Osaka, Japan
Occupation	Teacher
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1997-09-26
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	261
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	From C3 to top & sleeping at C3
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	5
Summit Term	1
HCN	0
Checksum	2434697
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	keiko tsubosa
Year of Birth	1959
Year	1997
Age at Expedition	38
Role	Member

Field	Value
ID	6055
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	05
Peak ID	CHOY
Year	1997
Season	3
First Name	Man Bahadur
Last Name	Gurung
Sex	M
Age	0
Birth Date	-
Year of Birth	1964
Calculated Age	33
Citizenship	Nepal
Status	H-A Worker
Residence	Sitalpati, Makalu-Barun
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1997-09-26
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	261
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	2nd ascent of Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2436403
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	man bahadur gurung
Year of Birth	1964
Year	1997
Age at Expedition	33
Role	Hired

Field	Value
ID	6056
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY97306
Member ID	06
Peak ID	CHOY
Year	1997
Season	3
First Name	Dawa (Ang Dawa)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1959
Calculated Age	37
Citizenship	Nepal
Status	H-A Worker
Residence	Walung, Makalu-9, Makalu-Barun
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	1997-09-26
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	261
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	2nd ascent of Cho Oyu; aka Dhaulagiri Dawa
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2434805
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	dawa (ang dawa) sherpa
Year of Birth	1959
Year	1997
Age at Expedition	38
Role	Hired

6 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Michihiro Kadoya	M	1963	Japan	Leader	Sakai, Osaka, Japan	Alpine guide	Details Other expeditions
Mineo Kitayama	M	1975	Japan	Climber	Tondabayashi, Osaka, Japan	Student	Details Other expeditions
Katsuji Maeda	M	1969	Japan	Climber	Minami-Sumiyoshi, Osaka, Japan	Architect	Details Other expeditions
Keiko Tsubosa	F	1959	Japan	Climber	Tondabayashi, Osaka, Japan	Teacher	Details Other expeditions
Man Bahadur Gurung	M	1964	Nepal	H-A Worker	Sitalpati, Makalu-Barun	-	Details Other expeditions
Dawa (Ang Dawa) Sherpa	M	1959	Nepal	H-A Worker	Walung, Makalu-9, Makalu-Barun	-	Details Other expeditions

References

0 recorded references.