more stats
1.6 miles
Distance
42 ft
Climb
-1,241 ft
Descent
00:34:33
Avg time
-1,199 ft
Altitude change
5,740 ft
Altitude min
6,939 ft
Altitude max
6,939 ft
Altitude start
5,740 ft
Altitude end
-13.801%
Grade
-53.421%
Grade max
14.718%
Grade min
513 ft
Distance climb
1 mile
Distance down
459 ft
Distance flat
00:34:33
Avg time

Flagstaff Trail Details

  • Activities
    • Hike
    • Horse
    • Trail Running
  • Riding Area
    Boulder Open Space
    Boulder, Colorado
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    85 in Hiking [+]
    • 85 in Trail Running
    • 5 in Horseback
  • Global Ranking
    #22363 in Hiking [+]
    • #14894 in Trail Running
    • #26169 in Horseback
  • State Ranking
    #741 in Hiking · Colorado [+]
    • #475 in Trail Running
    • #804 in Horseback
  • Hiking SAC Scale
    T2 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 Flagstaff Trail trail has been added yet!

AI Generated Description

Flagstaff Trail is a 2 mile 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 34 minutes to complete this trail.

Tags

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 13 rides
  • 11 miles avg distance
All
  • 36 rides
  •  
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Status:
on Jun 6, 2026
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      Directions to flagstaff-trail trailhead (40.003170, -105.306250)
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      Routes with this trail

      31
      Boulder Skyline Traverse
      17 miles • 5,868 ft • 16 • Point to Point •
      10
      Gregory Canyon Flagstaff Loop
      3 miles • 1,155 ft • 4 • Loop •

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      Nearby Trails

      Boulder Open Space

      • By toddTF Pro Trailforks & contributors
      • #172663 - 1,768 views

      Frequently Asked Questions

      ▼ Where is Flagstaff Trail located?
      Flagstaff Trail 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 40.00317, -105.30625.
      ▼ How hard is Flagstaff Trail?
      Flagstaff Trail is rated as Blue difficulty. The physical rating is Moderate. The average grade is 13.801%.
      ▼ What is the elevation gain for Flagstaff Trail?
      Flagstaff Trail has 42 ft of elevation gain. The trail has 1,241 ft of elevation descent. The elevation ranges from 5,740 ft to 6,939 ft.
      ▼ Is Flagstaff Trail a point to point trail?
      Flagstaff Trail is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Flagstaff Trail?
      Flagstaff Trail is 1.6 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Flagstaff Trail?
      Yes, dogs are allowed on Flagstaff Trail. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to hike Flagstaff Trail?
      Based on activity log data, the most popular months to hike Flagstaff Trail are:
      • March (4 activities)
      • May (4 activities)
      • October (4 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access Flagstaff Trail? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Flagstaff Trail are: View all parking locations in the area.
      ▼ How long does it take to hike Flagstaff Trail?
      Based on recorded activities, it takes an average of 36 minutes to hike Flagstaff Trail. The trail is 1.6 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Flagstaff Trail?
      Flagstaff Trail is a very popular trail. There have been 718 recorded activities on this trail. The trail has received 716 check-ins. View recent activity on this trail.

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