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Larimer County

Larimer County

The best walks and hikes in Larimer County

4.7

(660)

13,168

hikers

352

hikes

Want to go hiking in Larimer County to explore more of this corner of

Colorado? In this guide, we’ve reviewed our full collection of hikes and walking routes in Larimer County to bring you the best hiking routes in the region. To see which of our walks in Larimer 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: December 13, 2025

4.8

(61)

498

hikers

1. Nymph Lake & Glacier Gorge Trail Loop – Rocky Mountain National Park

11.2km

03:33

370m

Alpine lake loop through lily pad-covered waters, cascading falls, and peak reflections in the Rockies.

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Moderate

4.9

(39)

513

hikers

2. Sky Pond & The Loch Trail – Rocky Mountain National Park

14.0km

04:20

520m

Rocky scramble through waterfalls leads to an alpine cirque lake surrounded by granite cliffs.

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Moderate

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5.0

(10)

334

hikers

3. Chasm Lake – Rocky Mountain National Park

12.9km

05:12

720m

Alpine lake nestled beneath Longs Peak's towering Diamond wall after scenic gorge scrambling.

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Hard

4.8

(16)

184

hikers

4. Twin Sisters Peaks — Lilly Lake Visitor Center — Roosevelt National Forest

10.6km

03:45

650m

Climb through forest and talus to twin peaks with sweeping Front Range views and Longs Peak panoramas.

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Moderate

4.8

(8)

170

hikers

5. Mills Lake via Glacier Gorge loop — Rocky Mountain National Park

7.54km

02:17

250m

Gorge hike past thundering Alberta Falls to pristine Mills Lake beneath towering 13,000-foot peaks.

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Moderate

5.0

(2)

151

hikers

6. Longs Peak via Keyhole Route — Rocky Mountain National Park

21.6km

07:57

1,400m

Epic 14er climb through the famous Keyhole to Colorado's most iconic Rocky Mountain summit.

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Hard

4.9

(10)

199

hikers

7. Horsetooth Rock and South Ridge Trail loop — Horsetooth Mountain Open Space

8.16km

02:44

400m

Iconic climb to Fort Collins' famous pegmatite rock formation with panoramic Front Range views.

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Moderate

4.9

(10)

186

hikers

8. Horsetooth Rock — Horsetooth Mountain Open Space

7.71km

02:39

400m

Scramble up iconic Horsetooth Rock for sweeping views from the plains to Rocky Mountain National Park.

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Moderate

4.3

(8)

152

hikers

9. Estes Lake loop — Estes Park, Colorado

6.22km

01:38

50m

Paved lakeside loop through Estes Valley with elk sightings and mountain views at every turn.

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Easy

5.0

(5)

169

hikers

10. Arthur's Rock — Lory State Park

5.20km

01:50

310m

Rock scramble to a granite throne overlooking Horsetooth Reservoir and Fort Collins below.

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Moderate

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Other adventures in Larimer County

From the mountain peaks to the prairie – Rocky Mountains and Great Plains

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Mountain Hikes in Larimer County

Most popular attractions in Larimer County

Places to see

Natural Monuments

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Didn’t find what you were looking for?

Check out more Hikes throughout Larimer County below and find the perfect route in your destination.

Boyd Lake State Park Fort Collins Johnstown Horsetooth Mountain Open Space Rocky Mountain National Park Comanche Peak Wilderness Neota Wilderness Cache La Poudre Wilderness Rawah Wilderness Loveland Red Feather Lakes Estes Park Laporte Timnath Lory State Park

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Browse the best Hikes in other regions.

Front Range Boulder County Arapaho And Roosevelt National Forests El Paso County Clear Creek County Jefferson County Pike And San Isabel National Forests White River National Forest Sawatch Range Lake County Douglas County San Juan Mountains Summit County Grand Mesa, Uncompahgre And Gunnison National Forests Montezuma County Park County Grand County Chaffee County Pitkin County Gilpin County Montrose County Mesa County San Miguel County Eagle County Garfield County Ouray County Flat Tops Gunnison County Teller County San Juan National Forest Routt County La Plata County San Juan County Medicine Bow Mountains Weld County Delta County Rio Blanco County Archuleta County Arapahoe County Adams County Moffat County Dolores County Fremont County Denver County Saguache County Custer County Alamosa County Jackson County Huerfano County Hinsdale County Rio Grande National Forest Wet Mountains Mineral County Costilla County Elbert County Broomfield Broomfield County

The best walks and hikes in Larimer County

1. Nymph Lake & Glacier Gorge Trail Loop – Rocky Mountain National Park

2. Sky Pond & The Loch Trail – Rocky Mountain National Park

3. Chasm Lake – Rocky Mountain National Park

4. Twin Sisters Peaks — Lilly Lake Visitor Center — Roosevelt National Forest

5. Mills Lake via Glacier Gorge loop — Rocky Mountain National Park

6. Longs Peak via Keyhole Route — Rocky Mountain National Park

7. Horsetooth Rock and South Ridge Trail loop — Horsetooth Mountain Open Space

8. Horsetooth Rock — Horsetooth Mountain Open Space

9. Estes Lake loop — Estes Park, Colorado

10. Arthur's Rock — Lory State Park

Other adventures in Larimer County

Most popular routes in Larimer County

Most popular attractions in Larimer County

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