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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • 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
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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      No description for Back 40 has been added yet! Login or register to submit one.
      Primary Trail Type: Cross-Country
      Shuttleable: YES
      Castleford Parking Lot google parking directions
      Access Info:
      Numerous trailheads, easy access from Lake Ann, or from the trailhead at Blowing Springs
      Activities Click to view
      Region Details
      • 1
      • 7
      • 5

      Region Status
      Caution as of 13 hours
      Local Trail Association

      Stats

      Avg Trail Rating
      Trails (view details)
      13
      Trails Mountain Bike
      13
      Trails E-Bike
      10
      Trails Hike
      13
      Trails Trail Running
      13
      Trails Horse
      1
      Total Distance
      38 miles
      Total Descent
      6,911 ft
      Total Vertical
      387 ft
      Highest Trailhead
      1,368 ft
      Reports
      268
      Photos
      109
      Ridden Counter
      7,084

      Photos of Back 40 Mountain Bike

      5 |
      Oct 12, 2021 @ 6:54pm
      Oct 12, 2021
      trail: Rago
      30 |
      Sep 4, 2021 @ 6:53am
      Sep 4, 2021
      trail: Sally Trail
      16 |
      May 31, 2021 @ 11:16am
      May 31, 2021
      trail: Sally Trail
      26 |
      May 31, 2021 @ 11:15am
      May 31, 2021
      trail: Sally Trail
      76 |
      Mar 25, 2021 @ 8:04am
      Mar 25, 2021
      510 |
      Feb 23, 2021 @ 8:16am
      Feb 23, 2021
      462 |
      Feb 23, 2021 @ 8:16am
      Feb 23, 2021
      623 |
      Feb 23, 2021 @ 8:16am
      Feb 23, 2021

      Videos of Back 40 Mountain Bike

      Ledges Trail
      trail: The Ledges
      4:07 | 450 | Nov 7, 2017
      BACK 40 d
      5:17 | 142 | Jun 16, 2017
      BACK 40 c
      1:35 | 133 | Jun 16, 2017
      BACK 40 b
      2:02 | 73 | Jun 16, 2017
      BACK 40 e Flo Ride DH
      trail: Flo Ride
      5:31 | 1199 | Jun 14, 2017
      BACK 40 a The Ledges
      trail: The Ledges
      21:42 | 212 | Jun 13, 2017
      A search for flow
      1:50 | 259 | Dec 3, 2016
      First Time Riding Mad Hatter | Blowing...
      11:46 | 40 | Aug 22, 2021 , Bella Vista

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      user #2029574PlockridgeaddreportSBAT
      Oct 20, 2021 @ 12:07pm
      10 hours
      user #1775318jrpg8255riddentrailThe Back 40 Loop and 2 more
      Oct 19, 2021 @ 7:42pm
      1 day
      user #2710848jstegemanriddentrailThe Back 40 Loop
      Oct 19, 2021 @ 1:20pm
      1 day
      user #2873676GusFlxqZCwishlisttrailSummit School
      Oct 19, 2021 @ 12:53pm
      1 day
      user #2696794AgolightlywishlisttrailThe Back 40 Loop
      Oct 18, 2021 @ 9:36am
      3 days

      Recent Comments

      usernametypetitlecommentdate
      user #1821342OldgrumpreportThe Back 40 LoopBb. yep
      Aug 29, 2021 @ 4:29pm
      Aug 29, 2021
      user #2653283ejbiker93sstrailFlo RideDefinitely not a black diamond trail. In fact,...
      Jul 4, 2021 @ 3:07pm
      Jul 4, 2021
      user #1085536wgwestervelttrailThe Back 40 LoopIf you like to just ride fast and not look at...
      May 15, 2021 @ 4:00am
      May 15, 2021
      user #1085536wgwestervelttrailThe LedgesGood trail. I would give it a blue/black...
      May 15, 2021 @ 3:53am
      May 15, 2021
      user #1405576khdmtbtrailSummit SchoolShows a black track on the map... I'm not so...
      May 3, 2021 @ 7:12pm
      May 3, 2021

      Nearby Areas

      namedistance
      Blowing Springs 7 15 4 12.3 km
      Little Sugar 5 18 83.2 km
      Little Sugar 13.9 km
      Slaughter Pen Trails 12 37 5 75.2 km
      HandCut Hollow 1 11 25.6 km

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike1338 miles6,913 ft17 miles387 ft
      #738#37410426723,934
      E-Bike1038 miles6,890 ft17 miles387 ft
      1237182
      Hike1338 miles6,913 ft17 miles387 ft
      #531#3164266125
      Trail Running1338 miles6,913 ft17 miles387 ft
      #538#31626625
      Horse12,159 ft7 ft315 ft72 ft
      #1,046#68558
      • By slabhardcheese & contributors
      • Admins: apply
      • #16843 - 9,994 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Back 40.
      You must login to download files.