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      This area span the the iconic Flatirons open space area with hiking trails to the tops of South Boulder Peak, Bear Peak, Green Mountain, Flagstaff and Mount Sanitas. For less strenuous climbing, check out the Mesa trail and NCAR and Chautauqua trail heads for mellow loops through meadows and trees.
      Chapman Drive Trailhead Parking google parking directions plan a road trip here

      Trail info last updated

      Activities Click to view
      Region Details
      • 1
      • 1

      Region Status
      Open as of Oct 18, 2026

      Stats

      Avg Trail Rating
      Trails (view details)
      114
      Trails Mountain Bike
      2
      Trails E-Bike
      1
      Trails Gravel Bike
      12
      Trails Adaptive Bike
      1
      Trails Horse
      61
      Trails Hike
      114
      Trails Trail Running
      114
      Trails Snowshoe
      1
      Total Distance
      72 miles
      Total Descent
      17,432 ft
      Total Vertical
      3,202 ft
      Highest Trailhead
      8,476 ft
      Reports
      1,160
      Photos
      85
      Completed Counter
      31,530

      Popular Boulder Open Space Mountain Biking Trails

      5
      Chapman Drive
      • 100 ★ 4.4 • 3 miles • 984 ft • 1,067 •
      Chapman drive is a fire road on the backside of Flagstaff mountain. While closed to vehicles, it is maintained for emergency crews and is generally smooth making it a favorite for roadies, grodies and mountain bikers riding to Walker...

      Recent Ride Log Activity in Region

      Today

      • 0 rides

      Yesterday

      • 0 rides
      Past Week
      • 41 rides

      Photos of Boulder Open Space Mountain Bike

      mtb
      113 |
      Apr 8, 2026 @ 12:21pm
      Apr 8, 2026
      mtb
      159 |
      Oct 11, 2023 @ 7:00pm
      Oct 11, 2023
      mtb
      155 |
      Oct 11, 2023 @ 6:59pm
      Oct 11, 2023
      mtb
      157 |
      Oct 11, 2023 @ 6:59pm
      Oct 11, 2023
      report
      mtb
      109 |
      Dec 11, 2025 @ 2:39pm
      Dec 11, 2025
      trailrun
      19 |
      May 16, 2026 @ 9:55am
      May 16, 2026
      hike
      44 |
      Jul 16, 2025 @ 3:16pm
      Jul 16, 2025
      hike
      39 |
      Apr 28, 2025 @ 10:32am
      Apr 28, 2025
      hike
      41 |
      Apr 23, 2025 @ 7:43pm
      Apr 23, 2025
      hike
      56 |
      Apr 23, 2025 @ 7:42pm
      Apr 23, 2025
      hike
      41 |
      Apr 23, 2025 @ 7:42pm
      Apr 23, 2025
      hike
      43 |
      Apr 23, 2025 @ 7:42pm
      Apr 23, 2025
      Views 23Rock formations 11Summit 6Cave 3Rock slabs 2Stairs 1Wildflowers 1Meadow 1

      Videos of Boulder Open Space Mountain Bike

      Ute trail,Lower pikes peak area,near Manitou...
      mtb
      trail: Ute
      2:23 | 54 | Dec 31, 2015
      Ute Valley Dec 2014
      mtb
      trail: Ute
      0:18 | 104 | Dec 8, 2014
      Ute Valley
      mtb
      trail: Ute
      0:20 | 306 | Nov 25, 2014
      Angel Fire MSC Race weekend
      mtb
      trail: Viewpoint
      2:47 | 251 | Jun 14, 2012

      Recent Trail Reports

      statustraildateconditioninfouser
      Chapman Drive
      Jun 7, 2026 @ 7:39am (America/Denver)
      Jun 7, 2026
      		 IdealGravel Bike jacobdko
      Boulder Canyon Trail Fourmile Connection
      Jun 7, 2026 @ 7:39am (America/Denver)
      Jun 7, 2026
      		 IdealGravel Bike jacobdko
      Multi Use Trail
      Sep 12, 2025 @ 4:22pm (America/Denver)
      Sep 12, 2025
      		 IdealSkyryk
      Parking Connector
      Apr 8, 2023 @ 9:53pm
      Apr 8, 2023
      		 DryHike giniek27

      Activity Feed

      usernameactiontypetitledate
      marioang01addreportactivity #106160476 and 1 more
      Oct 18, 2026 @ 1:03pm
      Oct 18, 2026
      julialacknerriddentrailactivity #105995328
      Oct 16, 2026 @ 9:59am
      Oct 16, 2026
      Vorion79wishlisttrailactivity #105636233
      Oct 10, 2026 @ 3:09pm
      Oct 10, 2026
      alpinespacemanwishlisttrailactivity #103579143
      Sep 11, 2026 @ 5:30pm
      Sep 11, 2026
      AlexeyAdvvotetrailactivity #98813324
      Jul 9, 2026 @ 2:57pm
      Jul 9, 2026

      Recent Comments

      usernametypetitlecommentdate
      Carlo5btlr7reportRange ViewI
      Mar 25, 2026 @ 4:26pm
      Mar 25, 2026
      WendyBMAreportChapman DriveThanks for reporting downed trees! I was able...
      Apr 3, 2024 @ 3:29pm
      Apr 3, 2024

      Nearby Areas

      namedistance
      The People's Crossing Park2.7 km
      CU South Campus 5 13.1 km
      Walker Ranch 1 1 13.2 km
      Betasso Preserve 4 14 km
      Eldorado Canyon State Park4.2 km

      Local Mountain Biking Directory


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesactivity logs
      Mountain Bike23 miles30 ft1,230 ft1,352 ft
      		#10,293#23651,14110,205
      E-Bike13 miles23 ft994 ft961 ft
      		1,016190
      Gravel Bike127 miles184 ft5,197 ft1,355 ft
      		#6,565#2,7744256
      Adaptive Bike13 miles23 ft994 ft961 ft
      		#6,575#2,77491
      Horse6142 miles9,990 ft20 miles2,851 ft
      		#1,002#361401
      Hike11472 miles17,431 ft31 miles3,202 ft
      		#76#3791,1591110,545
      Trail Running11472 miles17,431 ft31 miles3,202 ft
      		#446#711,159119,306
      Snowshoe1899 ft43 ft
      		75

      Frequently Asked Questions

      ▼ What are the highest rated mountain biking trails in Boulder Open Space?
      The highest rated mountain biking trails in Boulder Open Space are: View all mountain biking trails sorted by rating.
      ▼ What is the best time of the year to ride in Boulder Open Space?
      Based on activity log data, the most popular months to ride in Boulder Open Space are:
      • August (93 activities)
      • October (81 activities)
      • June (68 activities)
      Check the Boulder Open Space reports page for current trail conditions, recent trail reports, and seasonal information from the local community.
      ▼ Where can I park to ride in Boulder Open Space?
      There are 11 parking locations listed in Boulder Open Space. The most popular parking spots are: View all parking and trailhead locations on the map to plan your visit.
      ▼ What is the longest trail in Boulder Open Space?
      The longest trail in Boulder Open Space is Chapman Drive at 2.6 miles. View all trails sorted by distance.
      ▼ What are the best & highest rated hiking trails in Boulder Open Space?
      ▼ How many trails are in Boulder Open Space?
      Boulder Open Space has a total of 114 trails. Of those, 2 are designated for mountain biking. Browse top mountain biking trails in Boulder Open Space to find detailed information including difficulty ratings, distances, and trail conditions.
      ▼ Which trail has the most elevation gain in Boulder Open Space?
      The trail with the most elevation gain in Boulder Open Space is Chapman Drive with 984 ft of elevation gain. View all trails sorted by elevation gain.
      ▼ Which trail has the most elevation descent in Boulder Open Space?
      The trail with the most elevation descent in Boulder Open Space is Chapman Drive with 23 ft of elevation descent. View all trails sorted by elevation descent.
      ▼ What activities are most popular in Boulder Open Space?
      Boulder Open Space supports the following activities: Hiking, Mountain Biking, Horseback, Trail Running.
      ▼ What are the steepest mountain biking trails in Boulder Open Space?
      The steepest mountain biking trail in Boulder Open Space is Chapman Drive with an average grade of 7%. View all trails sorted by grade.
      ▼ Are there any trails with scenic viewpoints in Boulder Open Space?
      Yes, there are 1 scenic viewpoints marked along trails in Boulder Open Space. Some popular viewpoints include: Explore more points of interest to find trails with the best views.
      ▼ Are the trails open in Boulder Open Space?
      The overall region status for Boulder Open Space is Clear / Green. Out of 109 trails:
      • Clear / Green: 83
      • Minor Issue / Yellow: 4
      • Significant Issue / Amber: 1
      • Closed: 21
      View the full trail status page for the latest updates.
      ▼ Can I ride an ebike in Boulder Open Space?
      There are 1 trails in Boulder Open Space that allow e-bikes. Check the e-bike trails listing for specific trail access details and any local regulations.
      ▼ What type of bike is most common in Boulder Open Space?
      Based on activity log data, the most common bike types used in Boulder Open Space are:
      • XC (41 activities)
      • AM (19 activities)
      • RD (1 activities)
      • Gravel (1 activities)
      Check the Boulder Open Space activity logs for more details.
      ▼ What are the most popular Strava Segments in Boulder Open Space?
      The most popular Strava segments in Boulder Open Space are:
      • The Big C (15,352 athletes)
      • 2 Min Repeats (14,001 athletes)
      • Giddy it up (13,754 athletes)
      View all Strava segments in Boulder Open Space.
      ▼ What trails are closed in Boulder Open Space?
      There are currently 21 closed trails in Boulder Open Space. The breakdown of all trail statuses is:
      • Clear / Green: 83
      • Minor Issue / Yellow: 4
      • Significant Issue / Amber: 1
      • Closed: 21
      View all closed trails for the latest updates.
      ▼ What are the most popular mountain biking trails in Boulder Open Space?
      The most popular mountain biking trails in Boulder Open Space are: View all mountain biking trails sorted by popularity.
      ▼ What are the best beginner ride trails in Boulder Open Space?
      The best beginner mountain biking trails in Boulder Open Space are: View all beginner mountain biking trails in Boulder Open Space.
      • By canadakaTF Pro Trailforks & contributors
      • Admins: BMA, IMBA, WendyBMA, BMA, mattoid, amrosen, getvert, mpopetz, Pumpntrail, andrewbikeboulder
      • #28281 - 5,605 views

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