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      Green Mountain is a medium-sized trail network in the Western suburbs of Denver. Most trails are Green/Blue with a few Blue sections. Great place to bring advanced beginners to work on skills and stamina. Often very busy on weekends and one of the few close places you can ride somewhat reliably most of the year. Despite the proximity to Jefferson County trails, this park (known as William F. Hayden Park) is actually administered by Lakewood and open till 10PM every day. It's a popular choice for after-dark rides as most other trails are only open till "sunset".

      Probably most known for trails "Rooney Valley" and "Box-o-Rox.
      source: ...
      Parking google parking directions plan a road trip here

      Trail info last updated

      Activities Click to view
      Region Details
      • 2
      • 6
      • 24
      • 2

      Region Status
      Open as of Sep 23, 2026
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      34
      Trails Mountain Bike
      34
      Trails E-Bike
      34
      Trails Gravel Bike
      2
      Trails Adaptive Bike
      2
      Trails Winter Fat Bike
      1
      Trails Horse
      30
      Trails Hike
      34
      Trails Trail Running
      34
      Total Distance
      27 miles
      Total Descent
      4,907 ft
      Total Vertical
      948 ft
      Highest Trailhead
      6,857 ft
      Reports
      845
      Photos
      171
      Completed Counter
      26,291

      Popular Green Mountain Mountain Biking Trails

      • 100 ★ 3.5 • 3,267 ft • 91 ft • 2,412 •
      This has been rerouted to be a little easier and cause less erosion.
      • 100 ★ 4.2 • 2,795 ft • 4 ft • 1,809 •
      This trail is designed more with the downhiller in mind, but can be climbed as well. At the high point where you come on from the original Box o' Rox trail you start with some fast berms and smaller doubles and then moves onto a slide...
      • 100 ★ 0.0 • 226 ft • 10 ft • 1,668 •
      A short connector where the top of Rooney got the short bypass. This is a part of the old Rooney Valley before the reroute around the old loose ridge.
      • 95 ★ 4.2 • 2 miles • 22 ft • 1,626 •
      2018 reroute offers new flow berms and jumps
      • 95 ★ 4.0 • 207 ft • 0 ft • 1,497 •
      Popular black diamond difficulty singletrack. This multi-use trail can be used both directions and has a moderate overall physical rating with a 0 ft double black diamond climb. It features drop, gap jump and rock garden. On average it takes minutes to complete this trail.
      • 95 ★ 3.0 • 1 mile • 559 ft • 1,469 •
      Popular blue difficulty singletrack. This multi-use trail can be used both directions and has a moderate overall physical rating with a 559 ft blue climb. On average it takes 16 minutes to complete this trail.
      • 95 ★ 4.2 • 3 miles • 352 ft • 1,458 •
      Highly rated popular green difficulty singletrack. This multi-use trail can be used both directions and has a easy overall physical rating with a 352 ft green climb. On average it takes 20 minutes to complete this trail.
      • 100 ★ 3.5 • 2 miles • 255 ft • 1,344 •
      Popular blue difficulty singletrack. This mountain bike primary trail can be used downhill primary. On average it takes 11 minutes to complete this trail.

      Recent Ride Log Activity in Region

      Today

      • 0 rides

      Yesterday

      • 25 rides
      Past Week
      • 142 rides

      Green Mountain Mountain Bike Routes

      9 miles • 1,253 ft • 4 •
      One of many loops available on Green Mountain. It has a section of Rooney Valley that is missed in other...
      ★ 2.8 • 11 miles • 1,211 ft • 12 • Out & Back •
      A great beginner to intermediate out, loop and back ride for Demoing directly from the Yeti HQ. Riders...
      6 miles • 921 ft • 2 •
      Climb Green Mountain from the underpass, then descend the flow trail, Rooney Valley.
      9 miles • 1,183 ft • 4 • Loop •
      Start from the Florida parking lot on Alameda Parkway. Take Hayden to the access road on top, and then Box...
      ★ 3.0 • 1 mile • 498 ft • 1 •
      Green Mountain North Side access trail From Exposition Dr up to Summit Loop Junction
      ★ 1.7 • 11 miles • 1,617 ft • 27 • Loop •
      Green Mountain 10.8 mile loop starting from the Florida Parking Lot that hits the peak along the way.

      Photos of Green Mountain Mountain Bike

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      Sep 10, 2026 @ 9:55am
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      Sep 18, 2026 @ 5:12am
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      Sep 18, 2026 @ 5:11am
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      Sep 18, 2026 @ 5:11am
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      51 |
      Sep 16, 2026 @ 5:12am
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      Sep 10, 2026 @ 10:02am
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      108 |
      Sep 10, 2026 @ 10:01am
      Sep 10, 2026

      Videos of Green Mountain Mountain Bike

      First Ride on the trail build
      mtb
      0:40 | 363 | Nov 27, 2018
      Green Mountain Loop - Lakewood - Colorado
      mtb
      6:18 | 312 | May 30, 2025 , Lakewood
      Hayden - chill bumpy blue down Green Mountain...
      mtb
      trail: Hayden
      10:00 | 384 | Mar 9, 2025 , Lakewood
      Wrigley's - ridgeline blue tech high above...
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      trail: Wrigley's
      14:11 | 195 | Sep 19, 2024 , Lakewood
      Summit Loop - Scenic but very bumpy - Green...
      mtb
      13:03 | 232 | Jun 12, 2024 , Lakewood
      Rooney Valley - Stunningly Scenic Flow - Green...
      mtb
      9:44 | 378 | Jun 9, 2024 , Lakewood
      Box O' Rox Extension, Drone, First-Person, and...
      mtb
      3:33 | 405 | Apr 12, 2023 , Lakewood
      Box O' Rox Trail From 3 Different Camera Angles
      mtb
      trail: Box-O-Rox
      3:33 | 468 | Apr 12, 2023 , Lakewood

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      Neoninja68wishlistregionactivity #107736462
      Nov 13, 2026 @ 6:42pm
      11 hours
      mnthomas1993wishlistrouteactivity #107447207
      Nov 8, 2026 @ 12:07pm
      Nov 8, 2026
      Raczwishlisttrailactivity #107325733
      Nov 6, 2026 @ 10:27pm
      Nov 6, 2026
      Frcgvotetrailactivity #107120079
      Nov 3, 2026 @ 6:07am
      Nov 3, 2026
      bigmopcommenttrailactivity #106899596
      Oct 30, 2026 @ 7:23pm
      Oct 30, 2026

      Recent Comments

      usernametypetitlecommentdate
      bigmoptrailRooney ValleyFYI this is a directional downhill trail! Do...
      Oct 30, 2026 @ 7:23pm
      Oct 30, 2026
      BenLow2019trailNorth AccessCame down this one and was happy. I pulled...
      Sep 18, 2026 @ 10:21am
      Sep 18, 2026
      BenLow2019trailRodeo AccessThe north entrance of this trail is at the...
      Sep 18, 2026 @ 5:19am
      Sep 18, 2026
      BenLow2019trailReebie's WayI did it too - pushed the bike up. Should’ve...
      Sep 6, 2026 @ 8:59am
      Sep 6, 2026
      BenLow2019trailSixth Ave West TrailNorth end is in a residential area with a...
      Sep 6, 2026 @ 7:41am
      Sep 6, 2026

      Nearby Areas

      namedistance
      Matthews Winters Park 3 5 52 km
      Red Rock Park 12.9 km
      Cottonwood Park3 km
      Apex Park 2 6 63 km
      Bear Creek Lake Park 33 53.2 km

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesactivity logs
      Mountain Bike3427 miles4,908 ft13 miles948 ft
      #1,343#39118838630,674
      E-Bike3427 miles4,908 ft13 miles948 ft
      #3,670#5078841,091
      Gravel Bike22 miles128 ft4,364 ft764 ft
      #502#25141182
      Adaptive Bike22 miles128 ft4,364 ft764 ft
      #504#252361
      Winter Fat Bike13,346 ft518 ft3,346 ft518 ft
      #502#2512
      Horse3027 miles4,797 ft13 miles948 ft
      #1,293#4921721
      Hike3427 miles4,908 ft13 miles948 ft
      #3,126#685283931,156
      Trail Running3427 miles4,908 ft13 miles948 ft
      #4,365#93183932,391

      Frequently Asked Questions

      ▼ What are the highest rated mountain biking trails in Green Mountain?
      The highest rated mountain biking trails in Green Mountain are: View all mountain biking trails sorted by rating.
      ▼ What is the best time of the year to ride in Green Mountain?
      Based on activity log data, the most popular months to ride in Green Mountain are:
      • October (400 activities)
      • September (340 activities)
      • May (313 activities)
      Check the Green Mountain reports page for current trail conditions, recent trail reports, and seasonal information from the local community.
      ▼ Where can I park to ride in Green Mountain?
      There are 1 parking locations listed in Green Mountain. The most popular parking spots are:
      ▼ What is the longest trail in Green Mountain?
      The longest trail in Green Mountain is Green Mountain (Perimeter) at 3.3 miles. View all trails sorted by distance.
      ▼ What are the best & highest rated hiking trails in Green Mountain?
      ▼ What are the best & highest rated trail running trails in Green Mountain?
      ▼ How many trails are in Green Mountain?
      Green Mountain has a total of 34 trails. Browse top mountain biking trails in Green Mountain to find detailed information including difficulty ratings, distances, and trail conditions.
      ▼ Which trail has the most elevation gain in Green Mountain?
      The trail with the most elevation gain in Green Mountain is Hayden with 610 ft of elevation gain. View all trails sorted by elevation gain.
      ▼ Which trail has the most elevation descent in Green Mountain?
      The trail with the most elevation descent in Green Mountain is Rooney Valley with 643 ft of elevation descent. View all trails sorted by elevation descent.
      ▼ What activities are most popular in Green Mountain?
      Green Mountain supports the following activities: Mountain Biking, E-Biking, Horseback, Hiking, Trail Running.
      ▼ What are the steepest mountain biking trails in Green Mountain?
      The steepest mountain biking trail in Green Mountain is West Exposition Pl Access Rd with an average grade of 11.3%. View all trails sorted by grade.
      ▼ What trails have the biggest jumps in Green Mountain?
      The trails with the biggest jumps in Green Mountain are: Browse all mountain bike trails to find trails with jumps and technical features.
      ▼ Are the trails open in Green Mountain?
      The overall region status for Green Mountain is Clear / Green. Out of 29 trails:
      • Clear / Green: 27
      • Minor Issue / Yellow: 2
      View the full trail status page for the latest updates.
      ▼ Can I ride an ebike in Green Mountain?
      Yes, Green Mountain supports e-bike riding. There are 29 trails in Green Mountain that allow e-bikes. Check the e-bike trails listing for specific trail access details and any local regulations.
      ▼ What are the most popular mountain biking routes in Green Mountain?
      ▼ What type of bike is most common in Green Mountain?
      Based on activity log data, the most common bike types used in Green Mountain are:
      • AM (291 activities)
      • XC (15 activities)
      • RD (5 activities)
      • Adaptive MTB (1 activities)
      • DH (1 activities)
      Check the Green Mountain activity logs for more details.
      ▼ What are the most popular Strava Segments in Green Mountain?
      The most popular Strava segments in Green Mountain are:
      • Uphill Bushwack Grunt (22,557 athletes)
      • Traverse to Dog Park (21,649 athletes)
      • lil' devil sprint (21,237 athletes)
      View all Strava segments in Green Mountain.
      ▼ What are the most popular mountain biking trails in Green Mountain?
      ▼ What are the best beginner ride trails in Green Mountain?
      The best beginner mountain biking trails in Green Mountain are: View all beginner mountain biking trails in Green Mountain.
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