19
hikers
Open Sky Loop
02:11
8.47km
50m
Hiking
The Open Sky Loop offers a delightful escape into Colorado's agricultural landscapes, providing expansive mountain views and a chance to spot local wildlife. This non-technical route winds through farm country and pastures, passing by the scenic Lagerman Agricultural Preserve and lakes like the Swede Lakes. You'll enjoy a mix of gravel paths and dirt roads, making for a pleasant and accessible journey through open skies.
Planning your visit to the Open Sky Loop is straightforward, with parking available at the trailhead. This 5.3-mile (8.5 km) hike, with a minimal 151 feet (46 metres) of elevation gain, typically takes around 2 hours and 11 minutes, making it a great option for a morning or afternoon outing. It's a dog-friendly trail, but remember to keep your furry friends leashed, and be prepared for full sun as there's very little shade along the route.
What truly sets the Open Sky Loop apart is its unique blend of rural charm and natural beauty, offering a moderate hiking trail difficulty that suits most. You might encounter horses, cows, and even alpacas, and birdwatchers will appreciate the seasonal osprey nest near Lagerman Reservoir. Don't miss the quirky horse statue near N 81st St, known for its seasonal costumes, adding a touch of local character to this popular Boulder County route.
Last updated: June 9, 2026
Waypoints
Start point
Get Directions
1.14 km
Lagerman Agricultural Preserve
Highlight • Natural
Tip by
3.64 km
Open Sky Loop
Highlight (Segment) • Trail
Tip by
8.47 km
End point
Way Types & Surfaces
Way Types
8.33 km
109 m
< 100 m
Surfaces
7.96 km
285 m
109 m
< 100 m
< 100 m
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Elevation
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Weather
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Sunday 28 June
31°C
13°C
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This route was planned by komoot.
Frequently Asked Questions
Where can I park to access the Open Sky Loop trail?
The Open Sky Loop trail is located within the Lagerman Agricultural Preserve. There is designated parking available at the trailhead. For more detailed directions, you can check local resources like visitlongmont.org.
How long does it typically take to hike this loop?
The Open Sky Loop is approximately 8.5 kilometers (5.3 miles) long. Most hikers can expect to complete the entire loop in about 2 hours and 11 minutes, depending on their pace and how often they stop to enjoy the scenery.
Is the Open Sky Loop suitable for beginners or families with children?
Yes, this trail is consistently rated as easy to easy/intermediate and is very suitable for beginners and families. It features minimal elevation changes and a non-technical gravel path, making it accessible for a wide range of fitness levels.
What is the terrain like on the trail?
The trail is primarily a gravel path with gentle climbs and descents, characterized by rolling hills and a doubletrack surface. It meanders through pastures and past lakes. Be aware that it traverses open agricultural land, so there is a notable lack of shade. There are also a few road crossings along the loop.
What kind of wildlife or natural features can I expect to see?
As its name suggests, the trail offers expansive 'open sky' views of the surrounding mountains and farm country. The preserve is rich in wildlife, especially birds, due to its wetlands and diverse habitats. You might spot osprey, various migrating bird species, and other local fauna, making it an excellent spot for birdwatching.
Is the Open Sky Loop dog-friendly?
Yes, the Open Sky Loop is a multi-use trail that welcomes dogs. Please ensure your dog is kept on a leash at all times to protect the local wildlife and ensure a pleasant experience for all trail users.
What is the best time of year to hike this trail?
The trail can be enjoyed year-round. However, due to the lack of shade, spring and fall offer more comfortable temperatures. In summer, it's best to go early in the morning or late in the afternoon to avoid the midday sun. Winter hiking is also possible, but be prepared for potentially cold and windy conditions.
Do I need a permit or pay an entrance fee to access the Lagerman Agricultural Preserve?
No, there are no permits or entrance fees required to access the Lagerman Agricultural Preserve or the Open Sky Loop trail. It is publicly accessible for recreation and wildlife observation.
Does the Open Sky Loop intersect with other trails?
Yes, while the Open Sky Loop forms the main route, sections of the trail also connect with or run alongside other paths such as Clover Basin Dr, Dry Creek Trail, Lagerman Trail, and Link Trail.
What makes the Open Sky Loop a notable trail in the area?
This trail is notable for offering a family-friendly outdoor experience that allows users to 'grind some gravel and avoid cars' in a safe environment. Its location within the Lagerman Agricultural Preserve highlights successful land preservation efforts. The expansive views, diverse birdlife, and accessible terrain make it a distinctive and enjoyable trail.
What should I bring with me when hiking the Open Sky Loop?
Given the lack of shade, it's highly recommended to bring plenty of water, sun protection (hat, sunscreen), and sunglasses. Comfortable walking shoes are essential for the gravel path. Binoculars can enhance your experience if you're interested in birdwatching.
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