more stats
4.9 miles
Distance
191 ft
Climb
-195 ft
Descent
00:19:22
Avg time
-4 ft
Altitude change
5,055 ft
Altitude min
5,171 ft
Altitude max
5,151 ft
Altitude start
5,147 ft
Altitude end
-0.015%
Grade
-7.886%
Grade max
8.88%
Grade min
2 miles
Distance climb
2 miles
Distance down
1 mile
Distance flat
00:19:22
Avg time

Open Sky Loop Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Gravel Bike
    • Adaptive Bike
    • Hike
    • Trail Running
  • Riding Area
    Lagerman Agricultural Preserve
    Longmont, Colorado
  • Difficulty Rating
    White Rate
  • Local Popularity
    90 in Mountain Biking [+]
    • 5 in E-Biking
    • 65 in Trail Running
    • 65 in Hiking
  • Global Ranking
    #145966 in Mountain Biking [+]
    • #77844 in Trail Running
    • #100574 in Hiking
  • Trail Type
    Gravel Path
  • Bike Type
    CX, Gravel, Adaptive MTB
  • Direction
    Both Directions
  • Climb Difficulty
    Green
  • Physical Rating
    Easy
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 1
  • Land Owner
    Boulder County Parks & Open Space

A great loop to grind some gravel and avoid cars. If your tires are skinny enough and you're going fast enough, it could be considered technical

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 9 rides
  • 30 miles avg distance
All
  • 29 rides
  • Last: Aug 23, 2026
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Open Sky Loop Trail Reports

statusdatedescription
Jul 30, 2026 @ 12:41pm (America/Denver)
Jul 30, 2026
Apr 7, 2026 @ 9:50pm (America/Denver)
Apr 7, 2026
Very dry but in good shape
Jun 8, 2025 @ 12:54pm
Jun 8, 2025
Jul 7, 2023 @ 12:04pm
Jul 7, 2023
 One puddle, a bit dampish here and there
Jun 24, 2023 @ 11:21am
Jun 24, 2023
 Just a couple of puddles here and there
more »
Status:
on Jul 30, 2026
Dry
no votes yet
Your vote: 0

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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
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  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
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Slope Aspect
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Flat N NE E SE S SW W NW
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        Directions to open-sky-loop trailhead (40.137900, -105.204910)
        View on Discover Map

        Photos

        1 more »
        mtb
        108 |
        Feb 5, 2023 @ 4:29pm
        Feb 5, 2023

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        Nearby Trails

        Lagerman Agricultural Preserve

        • By sollieTF Pro & contributors
        • #136295 - 4,597 views

        Frequently Asked Questions About Open Sky Loop

        ▼ Where is Open Sky Loop located?
        Open Sky Loop is located in Lagerman Agricultural Preserve, Longmont, Colorado, United States. It is part of the Lagerman Agricultural Preserve trail network. The trailhead is located at coordinates 40.1379, -105.20491.
        ▼ How hard is Open Sky Loop?
        Open Sky Loop is rated as White difficulty. The physical rating is Easy. The average grade is 0.015%. The climb difficulty is rated Green.
        ▼ What is the elevation gain for Open Sky Loop?
        Open Sky Loop has 191 ft of elevation gain. The trail has 195 ft of elevation descent. The elevation ranges from 5,055 ft to 5,171 ft.
        ▼ Is Open Sky Loop a point to point trail?
        Open Sky Loop is not a point to point trail. The direction is Both Directions. The trail type is gravel path.
        ▼ How long is Open Sky Loop?
        Open Sky Loop is 4.9 miles long. The trail type is gravel path.
        ▼ Are dogs allowed on Open Sky Loop?
        Yes, dogs are allowed on Open Sky Loop. Please keep dogs on a leash where required and clean up after them.
        ▼ When is the best time of year to ride Open Sky Loop?
        Based on activity log data, the most popular months to ride Open Sky Loop are:
        • July (3 activities)
        • August (1 activities)
        • September (1 activities)
        Check the reports page for current trail conditions.
        ▼ How do I access Open Sky Loop? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Open Sky Loop are: View all parking locations in the area.
        ▼ How long does it take to ride Open Sky Loop?
        Based on recorded activities, it takes an average of 22 minutes to ride Open Sky Loop. The trail is 4.9 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
        ▼ How busy is Open Sky Loop?
        Open Sky Loop is a very popular trail. There have been 685 recorded activities on this trail. The trail has received 806 check-ins. View recent activity on this trail.

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