Cho Oyu | 1994 W Ridge-W Face from N

A Germany expedition to Cho Oyu in 1994 via W Ridge-W Face from N, led by Erhard Loretan. Summit reached on 26th April 1994. 9 members recorded.

Expedition Details

Field	Value
ID	1325
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY94102
Peak ID	CHOY
Year	1994
Season	1
Host Country	2
Route 1	W Ridge-W Face from N
Route 2	-
Route 3	-
Route 4	-
Nationality	Germany
Leaders	Erhard Loretan
Sponsor	International Mountain Climbing (IMC) Cho Oyu Expedition 1994
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	140,143
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	Mexico, Switzerland
Approach	-
Basecamp Date	1994-04-09
Summit Date	1994-04-26
Summit Time	0957
Summit Days	17
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)	150
Total Members	9
Summit Members	4
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	False
O2 Unknown	False
Other Summits	-
Campsites	BC(09/04),ABC(13/04,5650m),C1(16/04,6400m),C2(17/04,6700m),C3(03/05,7400m),TrueSmt(26/04,04/05)
Route Notes	After Carlos arrived ABC got throat infection & stayed in camp 6 days. 20th went to 7400m alone for acclimatization; moved slowly because not fully well; down to ABC on 22nd. Waited till 25th, where had rested & full moon that night left ABC 3:00 pm on 25th in perfect weather (no wind) with Loretan in summit party, but Loretan not so well & no motivation for normal route so he turned back at 6600m at about 7:30 pm. Carlos continued up alone with no wind & full moon light so bright no need to use headlamps for climbing; had beautiful sunrise on Rolwaling; [on top] at 9:57 am, weather bad in descent with cloud & snowfall. Fastest ascent of Cho Oyu 19 hrs - slept in C2 at c7000m in descent; had rested & changed clothes on C1 at 6400m in ascent for one hour. Climbed direct route up from C2. No accident or frostbite; did not use oxygen - now goes to Lhotse. Helmut and Walter attempted to reach summit from C2 on 27th April but very cold & windy and turned back at 7500m. Next attempt was by three members who made C3 on the 3rd May with Danu Sherpa, who decended to C1 same day. Summiters left C3 at 5:15 am (Nepali time) & on top 11:20 am together & returned to C3 at 2 pm; 3:00 pm storm came & destroyed tents at C3. Fixed ropes & established C2, then down - doesn't like normal routes & has summited Cho Oyu. No Chinese police/army seen.
Accidents	Delgado serious illness (no other serious problems)
Achievement	Fastest ascent; 1st Mexican ascent
Agency	Asian Trekking
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2455198
Year	1994
Summit Success	True
O2 Summary	None
Route (lowercase)	w ridge-w face from n

Members

Field	Value
ID	5213
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	02
Peak ID	CHOY
Year	1994
Season	1
First Name	Carlos Miguel
Last Name	Carsolio Larrea
Sex	M
Age	0
Birth Date	-
Year of Birth	1962
Calculated Age	31
Citizenship	Mexico
Status	Climber
Residence	Mexico City, Mexico
Occupation	Outdoor activities instructor
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	1994-04-26
Summit Date 2	-
Summit Date 3	-
Summit Time 1	0957
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	140
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	2435898
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	carlos miguel carsolio larrea
Year of Birth	1962
Year	1994
Age at Expedition	32
Role	Member

Field	Value
ID	5214
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	03
Peak ID	CHOY
Year	1994
Season	1
First Name	Andres
Last Name	Delgado Calderon
Sex	M
Age	0
Birth Date	-
Year of Birth	1969
Calculated Age	24
Citizenship	Mexico
Status	Climber
Residence	Mexico City, Mexico
Occupation	Shopkeeper
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	(1969-2006) In Oct 2006 disappeared on Changabang
Summit Bid	1
Summit Term	9
HCN	0
Checksum	2438422
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	andres delgado calderon
Year of Birth	1969
Year	1994
Age at Expedition	25
Role	Member

Field	Value
ID	5215
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	04
Peak ID	CHOY
Year	1994
Season	1
First Name	Hans Juerg
Last Name	Fluetsch
Sex	M
Age	0
Birth Date	-
Year of Birth	1942
Calculated Age	51
Citizenship	Switzerland
Status	Climber
Residence	Frauenfeld, Thurgau, 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)	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	0
Summit Term	0
HCN	0
Checksum	2428639
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hans juerg fluetsch
Year of Birth	1942
Year	1994
Age at Expedition	52
Role	Member

Field	Value
ID	5216
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	05
Peak ID	CHOY
Year	1994
Season	1
First Name	Karl
Last Name	Greinwald
Sex	M
Age	0
Birth Date	-
Year of Birth	1960
Calculated Age	33
Citizenship	Germany
Status	Climber
Residence	Steingarden, Bavaria, Germany
Occupation	Joiner
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	0
Summit Term	0
HCN	0
Checksum	2435139
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	karl greinwald
Year of Birth	1960
Year	1994
Age at Expedition	34
Role	Member

Field	Value
ID	5217
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	06
Peak ID	CHOY
Year	1994
Season	1
First Name	Helmut
Last Name	Katzenmaier
Sex	M
Age	0
Birth Date	-
Year of Birth	1953
Calculated Age	41
Citizenship	Germany
Status	Climber
Residence	Friedrichshafen, Baden-Wuerttemberg, Germany
Occupation	Electrical engineer
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	1994-05-04
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1120
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	143
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	2432404
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	helmut katzenmaier
Year of Birth	1953
Year	1994
Age at Expedition	41
Role	Member

Field	Value
ID	5218
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	07
Peak ID	CHOY
Year	1994
Season	1
First Name	Walter
Last Name	Korber
Sex	M
Age	0
Birth Date	-
Year of Birth	1956
Calculated Age	37
Citizenship	Germany
Status	Climber
Residence	Frissen, Bavaria, Germany
Occupation	Nurse
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	1994-05-04
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1120
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	143
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	2433740
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	walter korber
Year of Birth	1956
Year	1994
Age at Expedition	38
Role	Member

Field	Value
ID	5219
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	01
Peak ID	CHOY
Year	1994
Season	1
First Name	Erhard
Last Name	Loretan
Sex	M
Age	0
Birth Date	-
Year of Birth	1959
Calculated Age	34
Citizenship	Switzerland
Status	Leader
Residence	Cresuz, Fribourg, 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)	False
Personal High Point (m)	6600
Summit Date 1	1994-04-26
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	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	(1959-2011) Died 28 April 2011 in Swiss Alps from falling
Summit Bid	4
Summit Term	7
HCN	0
Checksum	2434682
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	erhard loretan
Year of Birth	1959
Year	1994
Age at Expedition	35
Role	Leader

Field	Value
ID	5220
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	08
Peak ID	CHOY
Year	1994
Season	1
First Name	Heidi
Last Name	Sinz
Sex	F
Age	0
Birth Date	-
Year of Birth	1957
Calculated Age	36
Citizenship	Germany
Status	Climber
Residence	Hopferan, Bavaria, Germany
Occupation	Physiotherapist
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	0
Summit Term	0
HCN	0
Checksum	2434141
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	heidi sinz
Year of Birth	1957
Year	1994
Age at Expedition	37
Role	Member

Field	Value
ID	5221
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY94102
Member ID	09
Peak ID	CHOY
Year	1994
Season	1
First Name	Helge Thorolf
Last Name	Spindler
Sex	M
Age	0
Birth Date	-
Year of Birth	1960
Calculated Age	33
Citizenship	Germany
Status	Climber
Residence	Marbach, Baden-Wuerttemberg, Germany
Occupation	Salesman
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	1994-05-04
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1120
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	143
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	2435104
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	helge thorolf spindler
Year of Birth	1960
Year	1994
Age at Expedition	34
Role	Member

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Carlos Miguel Carsolio Larrea	M	1962	Mexico	Climber	Mexico City, Mexico	Outdoor activities instructor	Details Other expeditions
Andres Delgado Calderon	M	1969	Mexico	Climber	Mexico City, Mexico	Shopkeeper	Details Other expeditions
Hans Juerg Fluetsch	M	1942	Switzerland	Climber	Frauenfeld, Thurgau, Switzerland	Attorney	Details Other expeditions
Karl Greinwald	M	1960	Germany	Climber	Steingarden, Bavaria, Germany	Joiner	Details Other expeditions
Helmut Katzenmaier	M	1953	Germany	Climber	Friedrichshafen, Baden-Wuerttemberg, Germany	Electrical engineer	Details Other expeditions
Walter Korber	M	1956	Germany	Climber	Frissen, Bavaria, Germany	Nurse	Details Other expeditions
Erhard Loretan	M	1959	Switzerland	Leader	Cresuz, Fribourg, Switzerland	Alpine guide	Details Other expeditions
Heidi Sinz	F	1957	Germany	Climber	Hopferan, Bavaria, Germany	Physiotherapist	Details Other expeditions
Helge Thorolf Spindler	M	1960	Germany	Climber	Marbach, Baden-Wuerttemberg, Germany	Salesman	Details Other expeditions

References

Field	Value
ID	2987
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY94102
Reference ID	01
Year	1994
Type	2
Journal	AAJ
Author	Hawley, Elizabeth
Title	-
Publisher	-
Publication Date	1995
Language	-
Citation	69:304-305 (1995)
Yak 94	-
Notes	-

Field	Value
ID	4790
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY94102
Reference ID	02
Year	1994
Type	3
Journal	HIGH
Author	-
Title	-
Publisher	-
Publication Date	1994
Language	-
Citation	144:40 (Nov 1994)
Yak 94	-
Notes	-

Field	Value
ID	11875
Imported	2026-03-06 18:06:36.307770
Expedition ID	CHOY94102
Reference ID	03
Year	1994
Type	5
Journal	-
Author	-
Title	http://publications.americanalpineclub.org/articles/12199530403/Asia-Tibet-Cho-Oyu-from-the-North-in-the-Pre-Monsoon
Publisher	-
Publication Date	-
Language	-
Citation	-
Yak 94	-
Notes	-

3 recorded references.

Expedition ID	Journal	Author	Title	Publisher	Citation	Yak 94
CHOY94102	AAJ	Hawley, Elizabeth	-	-	69:304-305 (1995)	-
CHOY94102	HIGH	-	-	-	144:40 (Nov 1994)	-
CHOY94102	-	-	http://publications.americanalpineclub.org/articles/12199530403/Asia-Tibet-Cho-Oyu-from-the-North-in-the-Pre-Monsoon	-	-	-