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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
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
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • 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.
  • most popular
  • popular
  • less popular
  • not popular
ATV/ORV/OHV Filter
Max Vehicle Width
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Radar Time
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
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
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Only show trails with NO bikes.
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      Thornhill is a long-established network of mixed use trails in Maple Ridge. Originally travelled by equestrian and then motorized users, as well as hikers, in more recent history the area has seen mountain-bike specific trails developed for riders of all ages and skills. These trails were originally unknowingly unauthorized, but are now 'on the map' and the popularity of the riding area is evident as to how popular the trails have become.

      The climb is tame, the descents range from mellow blue, to big and boosty double-black, and all points in between. There is something for everyone at Thornhill.

      As this is a multi-use trail network -> PLEASE NOTE: When encountering horses, the MTB rider should yield to the horse rider. Yielding to Equestrians: Bikers often scare horses. We are less familiar to them than hikers, so use caution. We recommend that as you approach an equestrian trail user you call out a friendly greeting from far away. Slow down too. You want to start talking from about 50-75 ft away if you can. Horses spook easily, so try asking how the person on the horse would like you to get by. Would they like you to get off and walk (this is great for horses that are really skittish) or should you pass slowly at the next safe spot? Respect for all trail users creates a healthy trail community.

      Look for new signs that have been put in place. These signs have been put in place by the city of Maple Ridge with consultation from the Haney Horsemen Association and the Fraser Valley Mountain Bike Association. You will see signs at the bottoms of the downhill specific mountain trails that say "Downhill biking primary trail Expect to encounter bikes". Signs on very popular multi use trails will say "Shared Trail Expect to encounter horses/pedestrians/cyclists Walking speed only". Signs on long standing equestrian trails will say "Steep narrow trail section Cyclists must dismount and walk bikes" and "Horse Primary trail Cyclists must stop to allow horses to pass". And lastly there will be signs for the east side of the hill that has been built and developed for the hiking community these signs will say "Pedestrian trail only". These trails are still mostly unsanctioned and will be use at your own risk.
      Primary Trail Type: All-Mountain & Downhill
      eBikes Allowed: No
      AKA: Grant Hill, Thorn
      Land Status: City Managed
      Land Manager: City of Maple Ridge
      Small Parking Area google parking directions
      Access Info:
      Most start their ride at the gate on 256 Street and climb the road or Blazing Saddles. Alternately, you can start your ride at the cul de sac on 248 Street and climb Bear Ridge. Please be mindful of speed limits on surrounding streets and neighborhoods.
      Disclaimer:
      Use trails at your own risk. No unauthorized trail building, maintenance or modifications permitted. Please be mindful of speed limits on surrounding streets and neighborhoods
      featured
      Activities Click to view
      Region Details
      • 3
      • 3
      • 5
      • 12
      • 1
      • 2

      Region Status
      Caution as of Oct 23, 2021
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      35
      Trails Mountain Bike
      26
      Trails E-Bike
      4
      Trails Hike
      33
      Trails Trail Running
      33
      Trails Horse
      18
      Total Distance
      15 miles
      Total Descent
      3,095 ft
      Total Vertical
      824 ft
      Highest Trailhead
      1,089 ft
      Reports
      1,811
      Photos
      417
      Ridden Counter
      16,796

      Thornhill Mountain Bike Routes

      titleratingdistance
      SD43 Practice Enduro #2
      4 miles
      13 mile Thornhill Ridepopular ridelog13 miles
      6 mile Thornhill Ridepopular ridelog6 miles
      7 mile Thornhill Ridepopular ridelog7 miles
      6 mile Thornhill All-Mountain Ridepopular ridelog6 miles
      7 mile Thornhill Ridepopular ridelog7 miles
      10 mile Thornhill Ridepopular ridelog10 miles
      6 mile Thornhill All-Mountain Ridepopular ridelog6 miles
      7 mile Thornhill Downhill Ridepopular ridelog7 miles
      4 mile Thornhill All-Mountain Ridepopular ridelog4 miles

      Recent Ride Log Activity in Region

      Today
      • 0 rides
      Yesterday
      • 22 rides
      Past Week
      • 101 rides

      Photos of Thornhill Mountain Bike

      388 |
      Nov 1, 2017 @ 11:07am
      Nov 1, 2017
      304 |
      Nov 1, 2017 @ 11:06am
      Nov 1, 2017
      204 |
      Nov 1, 2017 @ 11:05am
      Nov 1, 2017
      trail: Rip n' Dip
      237 |
      Nov 1, 2017 @ 11:04am
      Nov 1, 2017
      trail: Rip n' Dip
      253 |
      Nov 1, 2017 @ 11:04am
      Nov 1, 2017
      trail: Rip n' Dip
      255 |
      Nov 1, 2017 @ 11:03am
      Nov 1, 2017
      trail: Heads Up
      120 |
      Oct 31, 2017 @ 10:41pm
      Oct 31, 2017
      trail: O.S.R.
      166 |
      Aug 30, 2017 @ 9:48am
      Aug 30, 2017

      Videos of Thornhill Mountain Bike

      Rip n' Dip
      trail: Rip n' Dip
      31 | May 6, 2022
      Shoulder checking a tree 7' up
      trail: Rip n' Dip
      57 | Apr 16, 2022
      trail: Rip n' Dip
      10 | Apr 12, 2022
      Hitting the middle drop

      63 | Mar 20, 2022
      Chromage Nose Dive
      | Jul 21, 2021
      Thornstar
      trail: Thornstar
      | Jul 8, 2021
      Thornstar
      trail: Thornstar
      | Jul 8, 2021
      Thornstar
      trail: Thornstar
      | Jul 8, 2021

      Current Trail Warnings

      statustraildateconditionuserinfo
      XC Shortcut
      May 20, 2022 @ 7:41pm
      May 20, 2022
      Prevalent MudadriangloverTree down, log crossing trail

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #935141adriangloveraddreportAccess and 4 more
      May 21, 2022 @ 8:21am
      May 21, 2022
      user #3034993vfkc8wishlisttrailO.S.R.
      May 19, 2022 @ 12:24pm
      May 19, 2022
      user #624252karvanetriddentrailBlazing Saddles and 1 more
      May 18, 2022 @ 1:06pm
      May 18, 2022
      user #1144363noodles73riddentrailRip n' Dip
      May 18, 2022 @ 12:24pm
      May 18, 2022
      user #3008115melymelriddentrailSHALAMALAMADINGDONG
      May 17, 2022 @ 1:58pm
      May 17, 2022

      Recent Comments

      usernametypetitlecommentdate
      user #1150786sixohfourxtrailTrail DwellerReally fun trail! Thanks for building such a...
      Apr 30, 2022 @ 4:34pm
      Apr 30, 2022
      user #1851055JKingerreportThornstarHa! - the trail is also in pretty good shape
      Apr 10, 2022 @ 5:30pm
      Apr 10, 2022
      user #1919722HeyBaumeistertrailTrail DwellerTo add to chbarnes comment, I was taken out by...
      Mar 6, 2022 @ 11:08pm
      Mar 6, 2022
      user #59875b-rocreportThornstarRumor had it you guys were out there...
      Mar 5, 2022 @ 9:26am
      Mar 5, 2022
      user #688480Rhino73reportThornstarThanks For the Props! B-Roc
      Mar 5, 2022 @ 8:50am
      Mar 5, 2022

      Nearby Areas

      namedistance
      Glen Valley Trails 12.7 km
      Silver Valley 9 44.4 km
      Woodlot 8 10 34.9 km
      Golden Ears Provincial Park 1 1 16.4 km
      Stave West - Rolley Lake 2 27.2 km

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike2612 miles2,697 ft7 miles702 ft
      #244#414151,807114,831
      E-Bike43 miles243 ft4,140 ft630 ft
      1,231430
      Hike3315 miles2,881 ft8 miles761 ft
      #172#3411,787327
      Trail Running3315 miles2,881 ft8 miles761 ft
      #172#331,787420
      Horse188 miles1,365 ft4 miles689 ft
      #159#1117494
      • By averyspacehall & contributors
      • Admins: FVMBA - ADMIN, ali-chapple, lee5986, mtbmudhoney, Hams, tlgifford, PNVtrails, FVMBA - NORTH, FVMBA-Mission
      • #4545 - 80,410 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Thornhill.
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