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Guanella Pass

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Recommended Routes in Guanella Pass - 2

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Favorite Looking down the mountain from Mt. Bierstadt Trail
Intermediate/Difficult Intermediate/Difficult

Mt. Bierstadt – West Slopes

7.2 mi 11.6 km 2,625' Up 800.22 m Up 2,624' Down 799.88 m Down

Georgetown, CO
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Favorite Hiking up the South Park Trail to Square Top Lakes
Intermediate/Difficult Intermediate/Difficult

Square Top Mountain Southeast Ridge

7.0 mi 11.2 km 2,454' Up 747.9 m Up 2,457' Down 748.91 m Down

Georgetown, CO
Explore in 3D

Guanella Pass Running

  • 49 Miles 79 Kilometers of Trail
  • 2 Recommended Routes
  • 0 Easy Trails Easy Trails
  • 4 Intermediate Trails Intermediate Trails
  • 6 Difficult Trails Difficult Trails
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Trails in Guanella Pass - 8

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2.1 mi 3.3 km #1Silver Dollar Lake Trail #79
Intermediate Intermediate
Georgetown, CO
Intermediate Intermediate
Georgetown, CO 42 
3.6 mi 5.9 km #2Shelf Lake Trail #634
Intermediate/Difficult Intermediate/Difficult
Georgetown, CO
Intermediate/Difficult Intermediate/Difficult
Georgetown, CO 13 
2.7 mi 4.3 km #3Gray's Peak via Horseshoe Basin Trail #260.2b
Difficult Difficult
Keystone, CO
Difficult Difficult
Keystone, CO
13.5 mi 21.6 km #4Rosalie Trail #603
Intermediate/Difficult Intermediate/Difficult
Bailey, CO
Intermediate/Difficult Intermediate/Difficult
Bailey, CO
2.2 mi 3.6 km #5Argentine Pass Trail #77
Difficult Difficult
Keystone, CO
Difficult Difficult
Keystone, CO
10.2 mi 16.4 km #6South Park Trail #600
Intermediate Intermediate
Georgetown, CO
Intermediate Intermediate
Georgetown, CO
13.3 mi 21.5 km #7CDT: Argentine Pass to Herman Gulch (CO Sec. 30)
Difficult Difficult
Georgetown, CO
Difficult Difficult
Georgetown, CO
1.8 mi 2.9 km #8Square Top Mountain Southeast Ridge
Difficult Difficult
Georgetown, CO
Difficult Difficult
Georgetown, CO

Photos of Guanella Pass - 34

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Mount Bierstadt
Sep 19, 2017 near Georgetown, CO
Wildflowers on the final ascent to Shelf Lake
Aug 4, 2019 near Keystone, CO
Square Top Mtn looms over the north side of the valley on the way up to Shelf Lake.
Aug 4, 2019 near Keystone, CO
Shelf Lake 2019. The blue tint to the lake this year is very pronounced!
Aug 5, 2019 near Keystone, CO
Looking down valley from Shelf Lake. Beautiful flowers.
Jun 8, 2023 near Keystone, CO
Can't resist more mountain goat photos - mom and her baby.
Aug 23, 2024 near Georgetown, CO
Argentine Pass trail - long switchback around Argentine Peak, Grays in left background.
Aug 24, 2024 near Georgetown, CO
Good day for mountain goats - Ruby Mountain in background, hazy with smoke from Jasper wildfire.
Aug 24, 2024 near Georgetown, CO
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