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Routes
Hikes
United States
Colorado
Jefferson County

Rocky Flats National Wildlife Refuge

Routes
Hikes
United States
Colorado
Jefferson County

Rocky Flats National Wildlife Refuge

The best city hikes and walks in Rocky Flats National Wildlife Refuge

4.7

(157)

4,330

hikers

10

hikes

Hiking in Rocky Flats National Wildlife Refuge offers access to a diverse landscape spanning 5,237 acres, characterized by rolling plains, prairie grasslands, woodlands, and wetlands. The refuge provides expansive views of the Front Range of the Rocky Mountains. It is home to rare xeric tallgrass prairie, a globally uncommon ecosystem. The terrain features a mosaic of habitats, supporting a wide variety of plant and wildlife species.

Best urban hiking trails in Rocky Flats National Wildlife Refuge

  • The most popular urban…

Last updated: May 14, 2026

1

hikers

#1.

Frank Varra Park Loop

2.40km

00:38

20m

20m

Hike the easy 1.5-mile Frank Varra Park Loop in Broomfield, Colorado, featuring a tranquil pond and well-maintained paths.

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Easy

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

Easy
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6.96km

01:48

20m

70m

Hike the easy Coal Creek Trail, a 4.3-mile route with minimal elevation gain, following Coal Creek through open spaces.

Easy

1.66km

00:25

10m

10m

Hike the easy 1.0-mile Viele Lake Loop Trail in Boulder, offering scenic views of Viele Lake and the Flatirons, perfect for families.

Easy

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

Easy
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Tips from the Community

Matthew
February 24, 2024, Frank Varra Park Pathway

Frank Varra Park is home to a few running paths and Frank Varra Pond, which is a small reservoir with a children's playing area. The Rock Creek Trail is the main path running through the park and can be connected to neighboring trails to make bigger (or smaller) loops.

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Aquarius Open Space is crossed by many trails, being the main one "Coal Creek Trail". There's a parking lot on the southeastern part, although you can access the area by any of the trails that go through it.

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Matthew
January 18, 2024, Frank Varra Pond

Frank Varra Pond is the centerpiece of Frank Varra Park. There is a lot of green space around the pond that is popular for kids and families.

0

0

Frank Varra Park is home to a few running paths and Frank Varra Pond, which is a small reservoir with a children's playing area. The Rock Creek Trail is the main path running through the park and can be connected to neighboring trails to make bigger (or smaller) loops.

0

0

Lisa
December 21, 2023, Viele Lake

This is a pretty little lake in Harlow Platts Community Park. The paved trail around the lake makes a nice running loop of almost .75 miles, and there are restrooms in the park.

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Frank Varra Park has a small pond and patches of trees over rolling green grass. Rock Creek flows through the park and Rock Creek Trail offers riders views of it all.

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0

Matthew
November 14, 2023, Aquarius Open Space

Aquarius Open Space features a few unpaved nature trails along with the wide, dirt Coal Creek Trail. There is one main parking area for the Nature Reserve, but you can access the trails on the property from a number of directions.

0

0

The park here has sports fields and tons of green space. You can access the Coal Creek Trail just across the street.

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Frequently Asked Questions

What kind of terrain can I expect on urban hikes in Rocky Flats National Wildlife Refuge?

The urban hiking trails in and around Rocky Flats National Wildlife Refuge typically feature rolling plains with a mix of prairie grasslands, woodlands, and wetlands. Surfaces are generally composed of crushed gravel or dirt, offering a comfortable walking experience. You'll find routes like the Frank Varra Park Loop that provide easy, accessible paths.

Are there any easy urban hiking trails suitable for beginners or casual walkers?

Yes, all the urban hiking trails featured in this guide are rated as easy, making them perfect for beginners, families, or anyone looking for a relaxed stroll. Routes such as the Viele Lake Loop Trail offer gentle gradients and shorter distances, ideal for a leisurely outing.

What wildlife might I encounter while hiking in the refuge?

Rocky Flats National Wildlife Refuge is a sanctuary for diverse wildlife. Hikers often spot elk, deer, coyotes, prairie falcons, and various raptors and songbirds. The refuge is also home to the federally threatened Preble's meadow jumping mouse. Interpretive panels along the trails provide more information about the local flora and fauna.

Are there any circular urban hiking routes available?

Yes, many of the urban hiking trails in the area are designed as loops, offering convenient circular routes. Examples include the Powerline Trail loop from Superior and the Frank Varra Park Loop, allowing you to start and end at the same point without retracing your steps.

What are the best times of year to go urban hiking in Rocky Flats National Wildlife Refuge?

The trails in Rocky Flats National Wildlife Refuge are open year-round. Spring and fall offer pleasant temperatures and vibrant scenery, with wildflowers blooming in spring. Winter can be beautiful for cross-country skiing or snowshoeing on the trails, while summer provides longer daylight hours for extended walks. Always check local weather conditions before heading out.

Are dogs allowed on the urban hiking trails in Rocky Flats National Wildlife Refuge?

While the refuge itself has specific regulations regarding pets, many surrounding urban trails and parks are dog-friendly. Always check the specific rules for each trail or park you plan to visit. When dogs are permitted, they must be kept on a leash to protect wildlife and ensure a pleasant experience for all visitors.

What are some notable natural features or landmarks to look out for?

The refuge is known for its expansive views of the Front Range of the Rocky Mountains and its rare xeric tallgrass prairie ecosystem. You'll also find a variety of wildflowers from spring through fall. Historically, the Lindsay Ranch barn is a notable landmark that can be found along some trails within the refuge, offering a glimpse into the area's past.

How many urban hiking trails are available in this guide for Rocky Flats National Wildlife Refuge?

This guide features 8 urban hiking trails in and around Rocky Flats National Wildlife Refuge, all categorized as easy. These routes offer a variety of distances and experiences suitable for different preferences.

What do other hikers enjoy most about urban hiking in this area?

The urban hiking trails in and around Rocky Flats National Wildlife Refuge are highly rated by the komoot community, with an average score of 4.7 out of 5 stars from 174 ratings. Reviewers often praise the well-maintained paths, the opportunity for wildlife viewing, and the expansive views of the Front Range, even on shorter, accessible routes like the Powerline Trail loop from Louisville.

Is there public transport access to the urban hiking trails near Rocky Flats National Wildlife Refuge?

While direct public transport to the heart of the refuge might be limited, many urban trails in nearby communities like Superior and Louisville, which connect to the broader trail network, are often accessible via local bus services. It's advisable to check the specific public transport options for your chosen trailhead. For general information on visiting the refuge, you can consult the official FWS website.

Are there any longer urban hiking options for those seeking more distance?

While many urban trails are shorter, there are options for longer walks by combining segments or choosing routes like the Coal Creek Trail, which offers a longer, easy path. The refuge itself boasts 15 miles of trails, and the Rocky Mountain Greenway Trail is an ongoing project that will eventually connect to other regional trail systems, providing extensive hiking opportunities.

Most popular routes in Rocky Flats National Wildlife Refuge

Family-friendly hikes in Rocky Flats National Wildlife Refuge

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