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Running trails & routes
United States
Colorado
Boulder County
Longmont

Open Sky Loop

Moderate

4.8

(4254)

9,660

runners

Open Sky Loop

00:58

7.92km

40m

Running

Lace up your jogging shoes for the Open Sky Loop, a moderate 4.9 miles (7.9 km) route that offers expansive views of the Front Range mountains. You will gain 135 feet (41 metres) over an estimated 57 minutes, winding through farm country and past serene lakes. The gravel path is…

Last updated: April 23, 2026

Waypoints

A

Start point

Get Directions

1

35 m

Lagerman Preserve Trailhead

Highlight • Trail

There is streetside parking off of Pike. The trails here are flat, smooth, and fast. The Open Sky Loop which circumnavigates most of the preserve is a good route.

Tip by

2

6.83 km

Lagerman Agricultural Preserve

Highlight • Natural

The Lagerman Agricultural Preserve and Reservoir is a small nature preserve that birders, boaters, picnickers, bikers, runners, and dog-walkers can all enjoy. You get great views of the foothills over …

Tip by

B

7.92 km

End point

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Way Types & Surfaces

Way Types

7.89 km

< 100 m

Surfaces

7.89 km

< 100 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Today

Sunday 28 June

31°C

13°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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Frequently Asked Questions

Where can I park for the Open Sky Loop trail?

Ample parking is available at the Lagerman Preserve Trailhead, which serves as the primary access point for the Open Sky Loop within the Lagerman Agricultural Preserve.

Is the Open Sky Loop dog-friendly?

Yes, the trail is dog-friendly. Please ensure your dog remains on a leash at all times to protect wildlife and respect other trail users.

When is the best time to jog this loop?

The trail offers pleasant jogging conditions throughout much of the year. Spring and fall provide comfortable temperatures and vibrant scenery. Due to limited shade, consider early mornings or late afternoons during summer months. Winter jogging is possible, but be prepared for potentially muddy, wet, or snowy sections depending on recent weather.

Are there any permits or fees required to access the Lagerman Agricultural Preserve?

No, there are no permits or entrance fees required to access the Lagerman Agricultural Preserve or to jog the Open Sky Loop. It is free and open to the public.

Is this trail suitable for beginner joggers?

Absolutely. The Open Sky Loop is rated as 'easy' and is considered a non-technical route, making it ideal for beginners and those looking for a comfortable, accessible jog. The terrain is primarily gravel with minimal elevation changes.

How long does it typically take to jog this loop?

Most joggers can complete the approximately 7.9 km (4.9-5.6 mile) loop in about 55-60 minutes, depending on pace. The average duration is around 57 minutes.

What is the terrain like on the Open Sky Loop?

The trail primarily features a well-maintained gravel path. It has gentle climbs and descents, with an average grade of 1% and a maximum of 5%. While generally smooth, some sections might be soft or have minor muddy/wet/snowy patches depending on recent weather.

What kind of scenery and viewpoints can I expect along the route?

You'll enjoy picturesque views as the trail winds through farm country, pastures, and past lakes within the Lagerman Agricultural Preserve. Expansive views of the Front Range mountains are a highlight, along with wetlands and active agricultural land.

What wildlife might I see while jogging the trail?

The preserve's wetlands and agricultural lands attract a variety of bird species, including a seasonal osprey nest. Keep an eye out for various waterfowl and other local birds.

Is there much shade on the trail, and what should I wear?

There is limited shade along the Open Sky Loop, so it's advisable to wear sun protection such as a hat, sunglasses, and sunscreen. Dress in layers appropriate for the weather, and bring plenty of water, especially on warmer days.

Does this route connect with other trails?

Yes, while the Open Sky Loop is the main path, the route also passes through sections of the Dry Creek Trail, Clover Basin Dr, Lagerman Trail, and Link Trail.

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00:08h

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