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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
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  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
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  • Very Dry
Trail Flow (Ridden Direction)
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
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Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
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Colors indicate trail is missing specified detail.
  • Description
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  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
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x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
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Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
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Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
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      Local DH Trails in the Welsh Valleys.

      Trail Runners & Hikers to be weary of the MTB Trails

      Most of the main Machen trails are now closed/decommissioned due to logging because of Larch disease
      Primary Trail Type: All-Mountain & Downhill
      AKA: Wyllie
      Sirhowy Valley Country Park google parking directions
      This region uses the Uk/Euro style trail grading system.
      Activities Click to view
      Region Details
      • 5
      • 5
      • 8
      • 22
      • 5

      Region Status
      Caution as of Jun 1, 2025

      Stats

      Avg Trail Rating
      Trails (view details)
      46
      Trails Mountain Bike
      46
      Trails E-Bike
      22
      Trails Horse
      3
      Trails Hike
      37
      Trails Trail Running
      37
      Total Distance
      28 miles
      Total Descent
      13,103 ft
      Total Vertical
      983 ft
      Highest Trailhead
      1,184 ft
      Reports
      271
      Photos
      76
      Ridden Counter
      4,303

      Photos of Wyllie Bike Park Mountain Bike

      9 |
      Sep 3, 2023 @ 11:43am
      Sep 3, 2023
      16 |
      Sep 3, 2023 @ 11:43am
      Sep 3, 2023
      trail: J Juro
      88 |
      Nov 22, 2020 @ 4:25am
      Nov 22, 2020
      trail: John'ys Gap
      40 |
      Nov 22, 2020 @ 2:33am
      Nov 22, 2020
      trail: John'ys Gap
      72 |
      Nov 22, 2020 @ 2:33am
      Nov 22, 2020
      trail: J Juro
      76 |
      Nov 22, 2020 @ 2:31am
      Nov 22, 2020
      48 |
      Nov 21, 2020 @ 4:02pm
      Nov 21, 2020
      59 |
      Nov 21, 2020 @ 3:56pm
      Nov 21, 2020

      Videos of Wyllie Bike Park Mountain Bike

      Rhys Barter - Wyllie
      trail: Wyllie DH
      2:14 | 2251 | Nov 11, 2020
      Wylie Bike Park - Squirrel
      5:10 | 880 | Dec 31, 2018
      Wylie Air Stream/Wylie XC - South Wales
      trail: Wyllie XC
      5:55 | 509 | Dec 28, 2018
      Machen Mast descent
      trail: Machen DH
      5:55 | 507 | Apr 22, 2016
      First Spin Around Wyllie on the Haibike Xduro...
      trail: Wyllie XC
      5:13 | 258 | Mar 13, 2016
      Mojo Trail Diary, Wales Episode 3 - Special...
      3:59 | 19350 | May 28, 2013
      Mojo Trail Diary, Wales Episode 2 with Tracy...
      5:55 | 31651 | May 14, 2013
      Mojo Trail Diary, Wales Episode 1 with Tracy...
      8:12 | 21024 | Apr 30, 2013

      Recent Trail Reports

      statustraildateconditioninfouser
      El Fasto
      May 17, 2025 @ 8:45am
      May 17, 2025
      DryRadBikeBro NCTC
      Wyllie XC
      May 17, 2025 @ 10:39am
      May 17, 2025
      Very DryE-Bike deanevs21
      SRO
      May 16, 2025 @ 10:28am
      May 16, 2025
      DryE-Bike RadBikeBro NCTC
      Machen DH
      May 16, 2025 @ 10:28am
      May 16, 2025
      DryE-Bike RadBikeBro NCTC
      Machen Climb
      May 16, 2025 @ 10:28am
      May 16, 2025
      DryE-Bike RadBikeBro NCTC
      Wyllie Air Stream
      Apr 21, 2025 @ 11:01am
      Apr 21, 2025
      VariableTrail destroyed by forestry operationsCfJ
      Trail
      Apr 21, 2025 @ 11:01am
      Apr 21, 2025
      VariableTrail destroyed by forestry operationsCfJ
      Slabs
      Apr 21, 2025 @ 11:01am
      Apr 21, 2025
      VariableTrail destroyed by forestry operationsCfJ
      Slabs Link
      Apr 21, 2025 @ 11:01am
      Apr 21, 2025
      VariableTrail destroyed by forestry operationsCfJ
      Wyllie Avalanche
      Apr 21, 2025 @ 10:56am
      Apr 21, 2025
      VariableTrail no longer there due to forestry...CfJ

      Activity Feed

      usernameactiontypetitledate
      DaleBDvD1priddentrailactivity #74022908 and 2 more
      Jun 18, 2025 @ 12:11am
      21 hours
      RadBikeBroaddreportactivity #71848496
      May 17, 2025 @ 10:43am
      May 17, 2025
      deanevs21addreportactivity #71848136
      May 17, 2025 @ 10:39am
      May 17, 2025
      RadBikeBroaddreportactivity #71759648 and 2 more
      May 16, 2025 @ 6:04am
      May 16, 2025
      ikendothisaddpoiactivity #71751916
      May 16, 2025 @ 1:27am
      May 16, 2025

      Recent Comments

      usernametypetitlecommentdate
      Pearson1trailChatham DHIs this trail still there does anyone know ?...
      Apr 21, 2025 @ 1:18pm
      Apr 21, 2025
      RustyD5ZMSStrailSquirrel DHForestry have destroyed 80% of the trails due...
      Mar 2, 2025 @ 5:16am
      Mar 2, 2025
      ZakU6UbfdtrailFurloughvery overgrown at start of trail
      Aug 9, 2023 @ 2:31pm
      Aug 9, 2023
      ZakU6UbfdtrailSlabstree down at the start
      Jun 22, 2023 @ 5:04am
      Jun 22, 2023
      ZakU6UbfdtrailQuarantinedestroyed by the trees
      Jun 22, 2023 @ 5:04am
      Jun 22, 2023

      Nearby Areas

      namedistance
      Rudry2.4 km
      Cwmcarn Forest Drive 1 1 23 km
      Caerphilly Woods 2 73.5 km
      Mountain View Bike Park 14.7 km
      Coed Y Wenallt Forest 65.1 km

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike4628 miles13,104 ft16 miles984 ft
      #2,102#10476271721
      E-Bike2218 miles5,676 ft9 miles909 ft
      #1,988#129249535
      Horse36 miles394 ft2 miles735 ft
      18
      Hike3726 miles10,515 ft14 miles984 ft
      #2,877#12823431
      Trail Running3726 miles10,515 ft14 miles984 ft
      #2,874#12623463
      • By STIGZ18 & contributors
      • Admins: STIGZ18
      • #13797 - 25,380 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Wyllie Bike Park.
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