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Hiking trails & Routes
United States
Colorado
Boulder County
Longmont

Open Sky Loop — Lagerman Agricultural Preserve

Routes
Hiking trails & Routes
United States
Colorado
Boulder County
Longmont

Open Sky Loop — Lagerman Agricultural Preserve

Intermediate

19

hikers

Open Sky Loop — Lagerman Agricultural Preserve

02:11

8.47km

50m

Gentle loop through working farmland and wetlands where ospreys nest and mountain views stretch endlessly.

The wide gravel path curves through open farmland, where several bodies of water catch the …

Last updated: October 3, 2025

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1

1.14 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 …

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2

3.64 km

Open Sky Loop

Highlight (Segment) • Trail

The Open Sky Loop is a popular trail in the Lagerman Agricultural Preserve. It provides foot and cycle traffic a nice way to circumnavigate the preserve to enjoy the wildlife and landscape views.

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8.47 km

End point

Way Types & Surfaces

Way Types

8.23 km

225 m

< 100 m

Surfaces

7.87 km

366 m

193 m

< 100 m

< 100 m

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Elevation

Elevation

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Today

Sunday 2 November

25°C

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How to understand each route’s difficulty level

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Mountain Bike

Road Bike

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Mountain Bike

Road Bike

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Easy
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Intermediate
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Expert
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Bike

Mountain Bike

Road Bike

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
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Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
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Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
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