more stats
2,548 ft
Distance
222 ft
Climb
-261 ft
Descent
00:09:31
Avg time
-39 ft
Altitude change
6,156 ft
Altitude min
6,417 ft
Altitude max
6,195 ft
Altitude start
6,156 ft
Altitude end
-1.532%
Grade
-35.606%
Grade max
38.867%
Grade min
1,056 ft
Distance climb
1,458 ft
Distance down
33 ft
Distance flat
00:09:31
Avg time

Flatirons Loop Details

  • Activities
    • Hike
    • Horse
    • Trail Running
  • Riding Area
    Boulder Open Space
    Boulder, Colorado
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    95 in Hiking [+]
    • 70 in Trail Running
    • 5 in Horseback
  • Global Ranking
    #10757 in Hiking [+]
    • #25500 in Trail Running
    • #23896 in Horseback
  • State Ranking
    #323 in Hiking · Colorado [+]
    • #889 in Trail Running
    • #684 in Horseback
  • Hiking SAC Scale
    T3 Demanding Mountain Hiking
  • Trail Type
    Singletrack
  • Direction
    Both Directions
  • Physical Rating
    Moderate
  • Trail Visibility
    Always easy to follow
  • Dogs Allowed
    Yes
  • eBike Allowed
    No
  • Land Owner
    City of Boulder Open Space & Mountain Parks

No community description for Flatirons Loop trail has been added yet!

AI Generated Description

Flatirons Loop is a 2,548 ft blue difficulty singletrack trail located near Boulder Colorado. This hike primary trail can be used both directions and has a moderate overall physical rating. Trail visibility is always easy to follow. On average it takes 9 minutes to complete this trail.

Tags
Traditionally Indigenous Territory

Recent Activity on Trail

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  • 0 rides
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6 Months
  • 20 rides
  • 4 miles avg distance
All
  • 92 rides
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Status:
on Nov 19, 2025
Dry
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      Directions to flatirons-loop trailhead (39.989270, -105.288620)
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      Nearby Trails

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      Frequently Asked Questions

      ▼ Where is Flatirons Loop located?
      Flatirons Loop is located in Boulder Open Space, Boulder, Colorado, United States. It is part of the Boulder Open Space trail network. The trailhead is located at coordinates 39.98927, -105.28862.
      ▼ How hard is Flatirons Loop?
      Flatirons Loop is rated as Blue difficulty. The physical rating is Moderate. The average grade is 1.532%.
      ▼ What is the elevation gain for Flatirons Loop?
      Flatirons Loop has 222 ft of elevation gain. The trail has 261 ft of elevation descent. The elevation ranges from 6,156 ft to 6,417 ft.
      ▼ Is Flatirons Loop a point to point trail?
      Flatirons Loop is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Flatirons Loop?
      Flatirons Loop is 2,548 ft long. The trail type is singletrack.
      ▼ Are dogs allowed on Flatirons Loop?
      Yes, dogs are allowed on Flatirons Loop. Please keep dogs on a leash where required and clean up after them.
      ▼ How do I access Flatirons Loop? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Flatirons Loop are: View all parking locations in the area.
      ▼ How long does it take to hike Flatirons Loop?
      Based on recorded activities, it takes an average of 25 minutes to hike Flatirons Loop. The trail is 2,548 ft long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Flatirons Loop?
      Flatirons Loop is a very popular trail. There have been 840 recorded activities on this trail. The trail has received 822 check-ins. View recent activity on this trail.

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