more stats
1.1 miles
Distance
210 ft
Climb
00:08:41
Avg time
213 ft
Altitude change
5,338 ft
Altitude min
5,551 ft
Altitude max
5,338 ft
Altitude start
5,551 ft
Altitude end
3.8%
Grade
-3.7%
Grade max
13.2%
Grade min
4,783 ft
Distance climb
131 ft
Distance down
712 ft
Distance flat
00:08:41
Avg time

Cobalt Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Horse
    • Hike
    • Trail Running
  • Riding Area
    Boulder Valley Ranch / Boulder Reservoir
    Boulder, Colorado
  • Difficulty Rating
    Green Rate
  • Local Popularity
    95 in Mountain Biking [+]
    • 85 in E-Biking
    • 85 in Trail Running
    • 50 in Hiking
    • 5 in Horseback
  • Global Ranking
    #35951 in Mountain Biking [+]
    • #114345 in E-Biking
    • #77906 in Trail Running
    • #146784 in Hiking
    • #24917 in Horseback
  • State Ranking
    #506 in Mountain Biking · Colorado [+]
    • #1,111 in E-Biking
    • #2,262 in Trail Running
    • #4,401 in Hiking
    • #738 in Horseback
  • Hiking SAC Scale
    T1 Hiking
  • Trail Type
    Singletrack
  • Direction
    Both Directions
  • Physical Rating
    Moderate
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 2

As part of the 2024 Boulder Valley Ranch Resign project, Cobalt has been opened to bikes The Boulder Mountainbike Alliance assisted the City of Boulder to reroute and optimize the trail for bike and adaptive bike use.

While this trail is bi-directional, it was built with the intent to be climbing optimized and looped with the downhill optimized Eagle trail.

Tags
Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 6 rides
  • 17 miles average
6 Months
  • 136 rides
  • 22 miles avg distance
All
  • 363 rides
  • Last: Oct 13, 2026
c1c2c3c4
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update trails status or condition

Cobalt Trail Reports

statusdatedescription
Aug 12, 2026 @ 6:52am (America/Denver)
Aug 12, 2026
Jun 30, 2026 @ 12:11pm (America/Denver)
Jun 30, 2026
May 22, 2026 @ 5:23pm (America/Denver)
May 22, 2026
 reporter Trail is open. Please update conditions if you ride
May 18, 2026 @ 11:40am (America/Denver)
May 18, 2026
 reporter Closed for muddy conditions. Status will be updated when trail reopens
May 5, 2026 @ 8:54am (America/Denver)
May 5, 2026
 reporter Closed for muddy conditions. Status will be updated when trail reopens
more »
Status:
on Aug 12, 2026
Dry
Avg: 3.86 (2 votes)
Your vote: 0

view (3,281)
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      Directions to cobalt trailhead (40.079690, -105.262500)
      View on Discover Map

      Photos

      No photos have been added for Cobalt yet, add a photo.

      Videos

      1 more »
      Cobalt is Now Open To Bikes! (November 2024)
      mtb
      2:06 | 282 | Dec 16, 2024 , Boulder

      Routes with this trail

      16
      North Boulder MTB Featured
      ★ 5.0 • 12 miles • 854 ft • 5 • Loop •
      Starting in 2024, singletrack options north of Boulder just got a whole lot better! The North Sky trail...
      Cobalt-Eagle Loop Featured
      3 miles • 225 ft • 2 • Loop •
      Opened on November 22, 2024 the Cobalt-Eagle loop is a 3-mile beginner friendly flow trail sure to put a...
      3.5 ★★★★★
      2 Ratings
      5 ★
      4 ★ 50%
      3 ★ 50%
      2 ★
      1 ★

      Reviews / Comments

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      Nearby Trails

      Boulder Valley Ranch / Boulder Reservoir

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      Frequently Asked Questions

      ▼ Where is Cobalt located?
      Cobalt is located in Boulder Valley Ranch / Boulder Reservoir, Boulder, Colorado, United States. It is part of the Boulder Valley Ranch / Boulder Reservoir trail network. The trailhead is located at coordinates 40.07969, -105.2625.
      ▼ How hard is Cobalt?
      Cobalt is rated as Green difficulty. The physical rating is Moderate. The average grade is 3.8%.
      ▼ What is the elevation gain for Cobalt?
      Cobalt has 210 ft of elevation gain. The elevation ranges from 5,338 ft to 5,551 ft.
      ▼ Is Cobalt a point to point trail?
      Cobalt is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
      ▼ How long is Cobalt?
      Cobalt is 1.1 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Cobalt?
      Yes, dogs are allowed on Cobalt. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Cobalt?
      Based on activity log data, the most popular months to ride Cobalt are:
      • August (37 activities)
      • September (36 activities)
      • July (33 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access Cobalt? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Cobalt are: View all parking locations in the area.
      ▼ How long does it take to ride Cobalt?
      Based on recorded activities, it takes an average of 9 minutes to ride Cobalt. The trail is 1.1 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Cobalt?
      Cobalt is a very popular trail. There have been 3,065 recorded activities on this trail. The trail has received 3,281 check-ins. View recent activity on this trail.

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