Mt. Oso

Overview Photos Routes Map Trip Reports

Elevation 13,689' (LiDAR)

Prev Elevation 13,684'

CO Rank 154

CO 13er Rank 101 of 582

Range San Juan

Lat / Lon 37.6069, -107.49368

Planning Weather
Conditions (7/21/2026)

More Member Ascents (105)
GPX Library (5)

13ers Within 5 Miles

Mt. Oso (0.00 mi) Unnamed 13058 (0.52 mi) Unnamed 13027 (0.74 mi) Peters Peak (0.77 mi) Unnamed 13229 (0.80 mi) "Mt. SoSo" (0.84 mi) "North Irving" (1.03 mi) Irving Peak (1.20 mi) "P 3" (1.35 mi) Unnamed 13323 (1.52 mi) Unnamed 13144 (1.52 mi) "P 2" (1.71 mi) "Weminuche Peak" (1.86 mi) "P 1" (1.99 mi) Unnamed 13350 (2.05 mi) Unnamed 13171 (3.61 mi) Thunder Mountain (3.67 mi) Unnamed 13164 (3.95 mi) Greylock Mountain (4.24 mi) Organ Mountain (4.26 mi) Echo Mountain (4.40 mi) Amherst Mountain (4.62 mi) McCauley Peak (4.65 mi) The Guardian (4.67 mi) Unnamed 13232 (4.74 mi) Grizzly Peak (4.82 mi) Mt. Nebo (4.86 mi) "East Windom" (4.95 mi) Vallecito Mountain (4.97 mi)

Photos

Mt. Oso and Nearby 13ers

Unnamed 13027

UN 13,030 viewed from "North Irving"

2019-08-19

By: Boggy B

"North Irving"

"North Irving" seen from "Soso&quot...

2019-08-19

By: Boggy B

Unnamed 13323

UN 13,310 from the north

2017-09-11

By: benners

"P 1"

"P 1" seen along the ridge from "P ...

2017-05-07

By: Boggy B

"P 2"

UN 13302 (aka "P 2") seen from its southeast ridge

2014-10-28

By: Boggy B

"P 3"

UN 13300 B (aka "P 3") seen from the east

2014-10-28

By: Boggy B

Unnamed 13229

UN 13222 A seen from the east

2014-10-28

By: Boggy B

Unnamed 13144

UN 13140 C seen from Rock Lake

2014-10-28

By: Boggy B

"Mt. SoSo"

"Mt Soso" seen from the northeast

2014-10-28

By: Boggy B

Peters Peak

Peters Peak from Rock Lake

2012-08-14

By: rijaca

"Weminuche Peak"

Weminuche Peak

2012-08-14

By: rijaca

Irving Peak

Irving Peak from the SW

2011-09-07

By: RandyMack

Mt. Oso

Mount Oso from SE

2011-09-06

By: RandyMack

Peters Peak

East Face of Peters Peak from the large bench/ridg...

2024-11-26

By: Marmot72

"Weminuche Peak"

Weminuche Peak

2012-08-14

By: rijaca

Mt. Oso

Mt. Oso and the surrounding 13ers seen from Windom...

2009-01-01

By: BillMiddlebrook

Mt. Oso

Mt. Oso from Windom Peak.

2009-01-01

By: BillMiddlebrook

Climbing Routes

		Combo: Irving Lake Approach (Alternate) Difficulty: Difficult Class 2 Total Elevation Gain: 5,200' Round-trip Distance: 21 mi
		Combo: I Roell Difficulty: Class 4 Total Elevation Gain: 5,568' Round-trip Distance: 28.4 mi	Exposure: Considerable Rockfall Potential: Considerable Route-Finding: Moderate Commitment: Considerable

Map

Trip Reports

8 Recent Reports	Peaks	Climbed	Added
Weminuche Wanderings Pt. 1: O So Fun! By: yaktoleft13 Peak(s): Irving Peak, Mt. Oso, "Mt. SoSo", "P 1", "P 2", "P 3", Unnamed 13229, Peters Peak, Unnamed 13144, "Weminuche Peak" Added: 8/6/2025	Irving Peak Mt. Oso "Mt. SoSo" "P 1" "P 2" "P 3" Unnamed 13229 Peters Peak Unnamed 13144 "Weminuche Peak"	7/26/2025	8/6/2025	14	50
The year of the Bicentennial By: Will_E Peak(s): Trinity Peak, Grizzly Peak, Coxcomb Peak, Mt. Oso, White Dome, Storm King Peak, Rinker Peak, Peak Seven, Peak Fifteen, Monitor Peak Added: 10/27/2024	Trinity Peak Grizzly Peak Coxcomb Peak Mt. Oso White Dome Storm King Peak Rinker Peak Peak Seven Peak Fifteen Monitor Peak	9/29/2024	10/27/2024	35	50
Moon Lake 13ers By: Chipmunk Peak(s): Mt. Oso, "Mt. SoSo", Irving Peak, "Weminuche Peak", Peters Peak, "P 2", "P 3", Unnamed 13229, Unnamed 13350, Unnamed 13323 Added: 5/4/2025	Mt. Oso "Mt. SoSo" Irving Peak "Weminuche Peak" Peters Peak "P 2" "P 3" Unnamed 13229 Unnamed 13350 Unnamed 13323	9/2/2023	5/4/2025	23	27
From Beartown/Hunchback Pass By: WildWanderer Peak(s): Mt. Oso Added: 8/25/2021	Mt. Oso	8/20/2021	8/25/2021	9	50
Eight Days in the Weminuche, Days 1-3: The BIG Rocks of Rock Creek By: supranihilest Peak(s): Unnamed 13350, Unnamed 13323, "Mt. SoSo", Irving Peak, "North Irving", Unnamed 13058, Mt. Oso, Unnamed 13144, "Weminuche Peak", Point 12,961 Added: 12/14/2020	Unnamed 13350 Unnamed 13323 "Mt. SoSo" Irving Peak "North Irving" Unnamed 13058 Mt. Oso Unnamed 13144 "Weminuche Peak" Point 12,961	7/12/2020	12/14/2020	17	75
SOLO Day Hiking the HIGH 200 By: illusion7il Peak(s): Peak Fifteen, Coxcomb Peak, Mt. Oso, Storm King Peak, Monitor Peak, Pilot Knob, Trinity Peak, White Dome, Arrow Peak, Grizzly Peak Added: 9/13/2018	Peak Fifteen Coxcomb Peak Mt. Oso Storm King Peak Monitor Peak Pilot Knob Trinity Peak White Dome Arrow Peak Grizzly Peak	9/13/2018	9/13/2018	27
Laboring in the Weminuche: Rock Lake 13ers By: benners Peak(s): Mt. Oso, Irving Peak, "Weminuche Peak", Peters Peak, Unnamed 13229, "P 3", "P 2", "Mt. SoSo", Unnamed 13323, Unnamed 13350 Added: 9/14/2017	Mt. Oso Irving Peak "Weminuche Peak" Peters Peak Unnamed 13229 "P 3" "P 2" "Mt. SoSo" Unnamed 13323 Unnamed 13350	9/2/2017	9/14/2017	18	1
Wandering in Weminuche - Sunlight Creek to Rock Creek (Part I) By: SnowAlien Peak(s): Peak Ten, Jagged Mountain, Mt. Oso, Irving Peak, "Mt. SoSo", "Weminuche Peak", "North Irving", Unnamed 13144, Unnamed 13323, Unnamed 13350 Added: 9/7/2017	Peak Ten Jagged Mountain Mt. Oso Irving Peak "Mt. SoSo" "Weminuche Peak" "North Irving" Unnamed 13144 Unnamed 13323 Unnamed 13350	8/26/2017	9/7/2017	14

View All 12 Trip Reports

Mt. Oso

13ers Within 5 Miles

Photos

Mt. Oso and Nearby 13ers

Climbing Routes

Map

Trip Reports

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