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United States
Colorado

Boulder County

The best walks and hikes in Boulder County

4.7

(809)

17,776

hikers

621

hikes

Hiking in Boulder County offers diverse landscapes where the Great Plains meet the Rocky Mountains, providing access to varied terrain. The region is characterized by iconic tilted sedimentary rock formations like the Flatirons, dramatic canyons such as Eldorado Canyon, and significant mountain peaks including Green Mountain and Bear Peak. Hikers can explore wide-open meadows, dense forests of ponderosa pine and Douglas fir, and scenic alpine lakes.

Best hiking trails in Boulder County

  • The most popular hiking route is Walker Ranch Loop, a 7.8 miles (12.6 km) trail that takes 3 hours 50 minutes to complete. This route offers varied terrain through forests and open spaces.
  • Another top favourite among local hikers is Flatirons Vista North and Prairie Vista Loop Trail, an easy 3.6 miles (5.9 km) path. This trail provides pleasant views of the Flatirons and surrounding prairies.
  • Local hikers also love the Lake Isabelle via Pawnee Pass Trail, a 5.8 miles (9.4 km) trail leading through scenic mountain terrain to an alpine lake, often completed in about 2 hours 50 minutes.
  • Hiking in Boulder County is defined by iconic rock formations like the Flatirons, diverse forest ecosystems, and scenic alpine lakes. The network offers options for various ability levels, from easy strolls to challenging mountain ascents.
  • The routes in Boulder County are highly rated by the komoot community with an average score of 4.7 stars from over 800 reviews. More than 17,000 hikers have used komoot to explore Boulder County's varied terrain.

Last updated: April 26, 2026

4.9

(14)

232

hikers

#1.

Walker Ranch Loop

12.6km

03:50

440m

440m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

4.9

(14)

232

hikers

12.6km

03:50

440m

440m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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5.0

(12)

234

hikers

5.37km

01:49

280m

260m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

5.0

(12)

234

hikers

5.37km

01:49

280m

260m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

4.9

(8)

163

hikers

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

Moderate

5.0

(3)

154

hikers

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

4.8

(6)

143

hikers

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

4.8

(4)

95

hikers

7.13km

02:09

240m

250m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Popular around Boulder County

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Tips from the Community

Russell_Dennehy-Carr
October 26, 2025, Lake Isabelle

Fun and challenging hike with great views

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Anita M
August 3, 2025, Brainard Lake

always fun and beautiful

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Anita M
August 3, 2025, Lake Isabelle

Isabelle lake still has lots of water, later in September it has often very low water

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Sue
June 29, 2025, Red Rock Lake

If you're looking for a picturesque spot off the beaten path, you should definitely check out Red Rock Lake. At an elevation of around 10,500 feet, this hidden gem is often overshadowed by Brainard Lake, but it's worth a visit. The lake offers stunning reflections and vibrant colors, making it a photographer's paradise, especially during sunrise or after sunset. Red Rock Lake is located inside the Brainard Lake Recreational Area off the Peak to Peak Highway (Hwy 72) near Ward, CO. You can visit the area throughout the summer and into October without a fee if you are on your bike.

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Alex
March 22, 2025, Flatirons Vista

Excellent views of the Flatirons.

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0

Phil
February 22, 2025, Brainard Lake

… best when the park is closed and you can only hike here …

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0

AaronLavanchy
January 5, 2025, Long Lake

Long Lake is an alpine that sits over 10,000 feet in elevation. It's surrounded by a beautiful backdrop of the Indian Peaks. The shore around the lake is a great spot to see moose and wildflowers in the summer.

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0

Jamie S.
February 16, 2024, Brainard Lake

Brainard Lake is a beautiful alpine lake in the Indian Peaks Wilderness below the Continental Divide surrounded by subalpine forest. It is in the Brainard Lake Recreation Area, which during the summer season usually requires a reservation and a fee, but if you are on your bike you do not need to pay or reserve a time slot. Because of the area's high elevation, snow typically remains until late spring, even on the paved road to the lake.

0

0

More Information

FAQs about hikes in Boulder County

  • What are the most popular hikes in Boulder County?
    One of the most popular hikes is Chautauqua Trail & Royal Arch Trail loop — Boulder Open Space & Mountain Parks. It's highly rated by the community and offers a classic Boulder County hiking experience.

  • Are there easy hiking options available in Boulder County?
    Yes, Boulder County offers a good selection of easier trails, with 188 easy hikes available. You can find options like those listed in 'Easy hikes in Boulder County' suitable for all fitness levels.

  • What about more challenging hikes in Boulder County?
    For those seeking a challenge, Boulder County has 62 difficult hikes. These routes typically involve significant elevation gain and rugged terrain, requiring good fitness and sure-footedness.

  • Can I find hikes with waterfalls in Boulder County?
    Absolutely! There are several waterfall hikes in Boulder County, perfect for enjoying scenic cascades. You can explore routes like those featured in 'Waterfall hikes in Boulder County'.

  • Are there hikes to alpine lakes in Boulder County?
    Yes, a notable example is the Lake Isabelle Loop — Indian Peaks Wilderness, a popular choice for its stunning alpine scenery and chances to spot wildlife like moose.

  • What is the longest hiking route available in Boulder County?
    The longest route is Walker Ranch Loop — Eldorado Canyon Park, stretching 12.71 km and typically taking around 03:49.

  • Looking for a shorter hike, what's a good option in Boulder County?
    For a quicker outing, consider First & Second Flatiron — Boulder Open Space & Mountain Parks. It's a more compact option at 4.41 km and typically takes about 01:52.

  • Which parks or open spaces are popular for hiking in Boulder County?
    Popular choices include Boulder Open Space & Mountain Parks, Eldorado Canyon State Park, Indian Peaks Wilderness, Roosevelt National Forest, and Walker Ranch Park. These areas provide diverse trails and scenic views.

  • When is the best time of year to go hiking in Boulder County?
    Hiking in Boulder County is enjoyable year-round, with spring and fall offering pleasant temperatures and vibrant scenery. Summer is great for higher elevation trails, while winter can provide opportunities for snowshoeing on select paths.

  • How many total hiking routes are there in Boulder County?
    Komoot features a comprehensive collection of 425 hiking routes across Boulder County, catering to all skill levels and preferences.

Frequently Asked Questions

How many hiking trails are available in Boulder County?

Boulder County offers an extensive network of over 420 hiking routes, catering to various skill levels. You'll find everything from easy strolls to challenging mountain ascents across its diverse landscapes.

What kind of terrain and elevation changes can I expect on Boulder County trails?

Hikers in Boulder County can experience a wide range of terrain, from wide-open meadows and agricultural lands to dense forests of ponderosa pines and Douglas fir. Trails often feature significant elevation changes, leading to prominent peaks like Bear Peak and Green Mountain, or traversing dramatic canyon landscapes such as those found in Eldorado Canyon State Park. The region offers routes with varying elevation gains, from gentle inclines to strenuous climbs.

Are there any family-friendly hiking trails in Boulder County?

Yes, Boulder County has many trails suitable for families. While specific 'easy' routes are numerous, you can find options that offer a mix of open land and forest, such as those at Betasso Preserve. Many trails provide a great opportunity for children to explore nature without overly challenging terrain. Look for routes with shorter distances and less elevation gain for a comfortable family outing.

Can I bring my dog on the hiking trails in Boulder County?

Boulder County offers many dog-friendly trails, but regulations vary by specific open space and park areas. It's always best to check the local rules for each trail, as some may require dogs to be on leash, while others might have restrictions in certain seasons or areas to protect wildlife. Always ensure your dog is under control and that you clean up after them.

What are some notable natural landmarks or viewpoints I can see while hiking?

Boulder County is rich with iconic natural features. You can hike to the base of the famous Flatirons, or reach the Green Mountain Peak for 360-degree vistas. Other prominent peaks include Bear Peak and South Boulder Peak. Dramatic canyon views can be found in Eldorado Canyon, and higher elevations like the Indian Peaks Wilderness offer stunning alpine scenery and lakes such as Lake Isabelle.

Are there any loop trails in Boulder County?

Yes, Boulder County features several excellent loop trails. For instance, the Mount Sanitas Loop offers panoramic views of Boulder, while the Anemone Loop Trail provides a moderate challenge. Further out, the Walker Ranch Loop traverses diverse ecosystems. These loops are great for experiencing varied landscapes without retracing your steps.

What is the best time of year to go hiking in Boulder County?

Boulder County offers hiking opportunities year-round, but the best time depends on your preference. Spring and fall provide pleasant temperatures and beautiful scenery, with wildflowers in spring and vibrant foliage in autumn. Summer is ideal for higher elevation trails, though afternoon thunderstorms can occur. Winter hiking is possible on lower elevation trails, often requiring appropriate gear for snow and ice. Always check trail conditions before heading out.

What do other hikers enjoy most about hiking in Boulder County?

The hiking experience in Boulder County is highly rated by the komoot community, with an average score of 4.7 stars from over 690 reviews. Hikers frequently praise the iconic rock formations like the Flatirons, the diverse forest ecosystems, and the scenic alpine lakes. Many appreciate the variety of trails that cater to all ability levels, from easy strolls to challenging mountain ascents, and the opportunity to spot local wildlife.

Are permits or reservations required for hiking in Boulder County?

While many trails in Boulder County's Open Space and Mountain Parks do not require permits for day hiking, some popular areas or specific activities might. For example, certain trailheads or parks, especially within the Indian Peaks Wilderness or Eldorado Canyon State Park, may require timed entry reservations or permits, particularly during peak seasons. It's advisable to check the specific requirements for your chosen destination, especially for areas managed by the US Forest Service or Colorado State Parks. For general information on activities, you can visit bouldercounty.gov.

Where can I find trails that offer opportunities for wildlife spotting?

Many trails in Boulder County provide excellent opportunities for wildlife viewing due to its diverse ecosystems. Areas like the Indian Peaks Wilderness, particularly around Lake Isabelle, are known for moose sightings. Trails traversing open meadows and forests, such as those at Betasso Preserve or Walker Ranch, can offer glimpses of deer, elk, and various bird species. Early mornings or late afternoons are often the best times for wildlife observation.

Are there any trails that lead to waterfalls in Boulder County?

Yes, Boulder County features several trails that lead to scenic cascades, providing opportunities for waterfall hikes. While specific named waterfalls are numerous, the region's dramatic canyon landscapes and mountain streams often create beautiful water features, especially during spring runoff or after heavy rains. Exploring areas with significant elevation changes and water sources will increase your chances of finding these natural attractions.

What are some easy day hikes suitable for beginners in Boulder County?

For beginners or those seeking a relaxed outing, Boulder County offers numerous easy day hikes. While the guide highlights moderate trails, you can find many shorter, less strenuous options within the Boulder Open Space & Mountain Parks system. For example, the Green Mountain West Ridge Trail is an easy route. Look for trails with minimal elevation gain and shorter distances, often found in the lower foothills or open space areas, which still provide beautiful views without a demanding climb.

Most popular routes in Boulder County

Family-friendly hikes in Boulder County

Most popular attractions in Boulder County

Natural Monuments

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