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Routes
Running trails & routes
United States
Colorado
Boulder County

Blue Dot Trail Loop

Hard

2.6

(18)

99

runners

Blue Dot Trail Loop

02:30

18.3km

400m

Running

Jog the difficult 11.3-mile Blue Dot Trail Loop in Arapaho & Roosevelt National Forests, featuring canyon views and a waterfall.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Roosevelt National Forest

Waypoints

A

Start point

Parking

Get Directions

1

11 m

West Magnolia Trailhead

Highlight • Parking

There is a dirt parking lot here with room for around a dozen vehicles. From here you can run, hike or bike on the dense trail system east or west of the highway

Tip by

2

3.72 km

View of Barker Reservoir

Highlight • Lake

Barker Meadow Reservoir was purchased by Boulder in 2010 from a Mrs. Barker (who was forced to sell, but didn't want to). The reservoir provides hydro-electricity and features a plethora …

Tip by

3

11.9 km

View of the Continental Divide

Highlight • Viewpoint

Take in a great view of the Continental Divide, as you look straight in to the Indian Peaks.

Tip by

B

18.3 km

End point

Parking

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Way Types & Surfaces

Way Types

10.3 km

4.98 km

2.65 km

303 m

Surfaces

6.55 km

5.72 km

5.34 km

665 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,650 m)

Lowest point (2,520 m)

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Weather

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Wednesday 20 May

6°C

-3°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to complete this jogging route?

The Blue Dot Trail Loop is a challenging jogging route that typically takes around 2 hours and 30 minutes to complete. This duration can vary based on your fitness level and how often you stop to enjoy the views.

What is the terrain like on this trail?

The terrain is quite varied and demanding. You'll encounter steep grades, both ascending and descending, with sections reaching over 25% steepness. The surface ranges from packed dirt with medium-sized rocks to loose rock in steeper switchbacks. Some parts can also be sandy or woodsy. Trekking poles are often recommended for navigating the challenging slopes.

Is the Blue Dot Trail Loop suitable for beginner joggers?

No, this trail is considered difficult and is not recommended for beginner joggers. Its significant elevation changes, steep grades, and varied terrain require a good level of fitness and experience. It's officially rated as 'Difficult' (Class D) for hiking.

Where is the trailhead and is there parking available?

The primary access point for this route is the West Magnolia Trailhead. Parking is available there, but it can fill up quickly, especially on weekends. Arriving early is advisable.

What can I see along the route?

This route offers stunning scenery. You'll be treated to panoramic views, including the View of Barker Reservoir and the majestic View of the Continental Divide. Keep an eye out for local wildlife like various bird species, small mammals, and lizards among the juniper and cacti.

What is the best time of year to jog this trail?

The best time to jog this trail is typically during the spring and fall months when temperatures are milder. Summer can be very hot, and winter conditions may bring snow and ice, making the steep sections particularly hazardous. Always check local weather and trail conditions before heading out.

Are dogs allowed on the Blue Dot Trail Loop?

Yes, dogs are generally allowed on trails within the Arapaho & Roosevelt National Forests. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other trail users. Please remember to pack out all pet waste.

Do I need any permits or is there an entrance fee for the Arapaho & Roosevelt National Forests?

Generally, there are no entrance fees required to access the trails within the Arapaho & Roosevelt National Forests for day use. However, some specific areas or activities might require permits or have fees. It's always best to check the official US Forest Service website for the most current regulations before your visit.

Does this route intersect with other well-known trails?

Yes, this route incorporates sections of several other trails. You will jog along parts of the Blue Dot, Boy Scout Spur, Star Wars, Reboot, Boot, Tungsten Spur, Carwash, Dog Trail/Doe Trail, Pipeline, Social 5, Blue Dot Connector, Wildwood Trail, USFS Social 9, Boy Scout Trail, Dailey Spur, Magnolia South, Aspen Alley, and Super Vü trails.

What should I bring for a jogging trip on this trail?

Given the trail's difficulty and varied terrain, it's recommended to bring plenty of water, appropriate trail running shoes with good grip, sun protection (hat, sunscreen), and layers of clothing. Trekking poles can be very helpful for stability on the steep descents and ascents. A map or GPS device is also advisable.

Are there any specific challenges or insider tips for jogging this loop?

The initial descent can be quite strenuous, and the final 2 kilometers involve a demanding ascent back to the starting point. Pacing yourself, especially on the steep sections, is crucial. Consider starting early to avoid crowds and the midday heat, and always be prepared for rapidly changing weather conditions in the mountains.

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