The best walks and hikes in Boulder County
4.7
(648)
13,861
hikers
432
hikes
Want to go hiking in Boulder County to explore more of this corner of
Colorado? In this guide, we’ve reviewed our full collection of hikes and walking routes in Boulder County to bring you the best hiking routes in the region. To see which of our walks in Boulder County is the right one for you, browse real tips and photos uploaded by other hikers—and see what they had to say about each walk.
Colorado? In this guide, we’ve reviewed our full collection of hikes and walking routes in Boulder County to bring you the best hiking routes in the region. To see which of our walks in Boulder County is the right one for you, browse real tips and photos uploaded by other hikers—and see what they had to say about each walk.
Last updated: November 4, 2025
4.8
(45)
465
hikers
Climb through pine forest and flagstone steps to reach a natural stone arch overlooking Boulder.
Intermediate
4.8
(9)
422
hikers
2. Mount Sanitas Loop — Boulder Open Spaces & Mountains Parks
6.33km
02:34
440m
440m
Boulder's backyard summit with steep rock scrambles and sweeping views over the Colorado plains.
Intermediate
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4.8
(5)
427
hikers
3. First & Second Flatiron — Boulder Open Space & Mountain Parks
4.41km
01:52
390m
390m
Rock scramble through Boulder's iconic Flatirons with sweeping views of campus and Rockies.
Intermediate
4.5
(11)
378
hikers
4. Royal Arch Trail — Boulder Open Space & Mountain Parks
5.46km
01:58
340m
340m
Climb through Bluebell Canyon to a natural stone window framing Boulder and the plains beyond.
Intermediate
5.0
(11)
265
hikers
5. Rattlesnake Gulch Trail loop — Eldorado Canyon State Park
6.13km
02:03
300m
300m
Historic trail to 1913 hotel ruins with sweeping canyon views and glimpses of rock climbers below.
Intermediate
4.5
(15)
247
hikers
6. Anemone Loop Trail — Boulder Open Space & Mountains Parks
7.02km
02:08
250m
250m
Boulder's newest trail with helicopter-built stone steps leading to panoramic views over downtown and the Flatirons.
Intermediate
4.9
(12)
208
hikers
7. Walker Ranch Loop — Eldorado Canyon Park
12.7km
03:49
430m
430m
Historic ranch loop through diverse foothills terrain with creek views and Front Range vistas.
Intermediate
4.9
(10)
183
hikers
8. Lake Isabelle Loop — Indian Peaks Wilderness
9.73km
02:52
150m
150m
Alpine lake hike through wildflower meadows with towering 13,000-foot peaks and frequent moose sightings.
Intermediate
5.0
(6)
211
hikers
9. Green Mountain West Ridge Trail — Boulder Open Space & Mountain Parks
6.83km
01:56
150m
150m
Pine-scented trail through meadows and forest to 360-degree views of Boulder's peaks and fourteeners.
Easy
3.0
(1)
170
hikers
10. Lost Lake via Devil's Thumb Trail — Roosevelt National Forest
5.28km
02:03
240m
240m
Shaded forest trail to alpine Lost Lake with moose sightings and fly fishing beneath Bryan Mountain.
Intermediate
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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NiwotEldoraSeven HillsEldorado SpringsAllensparkGold HillBark RanchSunshineCrismanNederlandMountain MeadowsParagon EstatesIndian Peaks WildernessLongmontTall TimberSugarloafWalker Ranch ParkSt. Ann HighlandsLazy AcresLouisvilleWardEldorado Canyon State ParkJamestownHidden LakeGunbarrelLafayetteValmontSuperiorBonanza Mountain EstatesPine Brook HillLyonsBoulderGlendaleLeynerAltonaRabbit Mountain Open Space
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