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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • 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
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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
  • Snowmobile
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
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 Middlesex County (Northwest) has been added yet! Login or register to submit one.
      Region Details
      • 142
      • 14
      • 337
      • 295
      • 40
      • 1

      Stats

      Avg Trail Rating
      Trails (view details)
      933
      Trails Mountain Bike
      829
      Trails E-Bike
      31
      Trails Horse
      49
      Trails Hike
      905
      Trails Trail Running
      906
      Trails Dirtbike/Moto
      1
      Trails Observed Trials
      1
      Trails ATV/ORV/OHV
      1
      Trails Snowmobile
      1
      Trails Snowshoe
      223
      Trails Downhill Ski
      27
      Trails Backcountry Ski
      27
      Trails Nordic Ski
      54
      Total Distance
      395 miles
      Total Descent
      28,551 ft
      Total Vertical
      539 ft
      Highest Trailhead
      598 ft
      Reports
      3,378
      Photos
      358
      Ridden Counter
      90,965
      Sub Regions

      Popular Middlesex County (Northwest) Trails

      statustitledifficultyrating
      Yellow Trail
      Russell Mill Pond & Town Forest
      Wild Turkey
      Russell Mill Pond & Town Forest
      Pump Track
      Russell Mill Pond & Town Forest
      Upper White
      Russell Mill Pond & Town Forest
      Yellow Rabbit
      Billerica State Forest
      Orange Goose Loop
      Russell Mill Pond & Town Forest
      Blue Heron Loop
      Russell Mill Pond & Town Forest
      Lower White
      Russell Mill Pond & Town Forest
      Purple Martin
      Russell Mill Pond & Town Forest
      Northern Loop
      Billerica State Forest
      Coots Connector
      Russell Mill Pond & Town Forest
      Green Trail
      Russell Mill Pond & Town Forest
      Carbon Force
      Billerica State Forest
      Ducks Drop
      Russell Mill Pond & Town Forest
      Rangeway Trails
      Billerica State Forest

      Mountain Bike Routes

      titleratingdistance
      PK: Great Brook Farm Intermediate Loop
      Great Brook Farm State Park
      11 miles
      2024 Great Brook Advanced Trifecta Route - PK Memorial
      Great Brook Farm State Park
      30 miles
      Great Brook Farm Advanced Loop
      Great Brook Farm State Park
      14 miles
      Epic Trail Ride Boston to Northampton: Day 2 - Littleton to Wachusett
      Littleton
      47 miles
      Great Brook Farm Traverse Advanced Loop
      Great Brook Farm State Park
      29 miles
      LDT East
      Lowell
      6 miles
      Nobduro
      Nobscot Hill
      8 miles
      Billerica State Forest 18 miler
      Russell Mill Pond & Town Forest
      14 miles
      Lowell Dracut 10 without the swamp
      Lowell
      10 miles
      BCT Bike Route- Chelmsford to Concord
      Merrimack Valley NEMBA
      20 miles

      Recent Ride Log Activity in Region

      Today
      • 19 rides
      Yesterday
      • 49 rides
      Past Week
      • 406 rides

      Photos of Middlesex County (Northwest) Mountain Bike

      2 |
      Apr 15, 2024 @ 11:27am
      Apr 15, 2024
      trail: Last Dance
      20 |
      Mar 22, 2024 @ 7:17pm
      Mar 22, 2024
      16 |
      Jul 6, 2023 @ 7:02am
      Jul 6, 2023
      24 |
      May 21, 2023 @ 3:09pm
      May 21, 2023
      trail: Quarry Loop
      30 |
      May 8, 2023 @ 5:56pm
      May 8, 2023
      81 |
      Apr 2, 2023 @ 9:39am
      Apr 2, 2023
      171 |
      Apr 2, 2023 @ 9:39am
      Apr 2, 2023
      110 |
      Apr 2, 2023 @ 9:39am
      Apr 2, 2023

      Videos of Middlesex County (Northwest) Mountain Bike

      Jimmy & Red, The wall
      trail: Red
      111 | May 9, 2021
      LDTF Night Ride
      trail: B Town
      0:10 | 172 | Oct 17, 2018
      May 28 a early morning Hot ride
      trail: Chicken
      2:42 | 303 | May 28, 2016
      Green Trail  Thunder Mountain MTB lift park
      11:31 | 210 | Jul 10, 2015
      THIS IS JAMAICA
      trail: Chicken
      5:00 | 30709 | Nov 4, 2014
      Russell Mill Pump Track

      0:44 | 640 | Oct 18, 2014

      Current Trail Warnings

      statustraildateconditionuserinfo
      Upper Valley
      Lowell-Dracut-Tyngsboro State Forest
      May 29, 2024 @ 8:55am
      5 hours
      IdealDrewyee Down tree across the trail!

      Recent Trail Reports

      Activity Feed

      usernameactiontypetitledate
      Drewyeeaddreportactivity #53330238
      May 29, 2024 @ 8:55am
      5 hours
      chuckles1177addkarmaactivity #53282259
      May 28, 2024 @ 7:52am
      1 day
      SizeableSenderaddreportactivity #53261437
      May 27, 2024 @ 7:19pm
      2 days
      SizeableSendercheckintrailactivity #53261352
      May 27, 2024 @ 7:17pm
      2 days
      Downuniversity94wishlistregionactivity #53236682
      May 27, 2024 @ 9:24am
      2 days

      Recent Comments

      usernametypetitlecommentdate
      SofakingfastreportNorthern LoopThanks for the report. The issue has been...
      May 21, 2024 @ 6:37am
      May 21, 2024
      kerryman71trailLowell ConnectorRode this for the first time today. Agree,...
      May 2, 2024 @ 1:58pm
      May 2, 2024
      mattson-clementtrailBoundary Trail East (Yellow)This trail is your best bet if you enjoy...
      Mar 4, 2024 @ 6:16pm
      Mar 4, 2024
      Froman1331reportWelcome Back CarterHappened after 1:15pm. Did a hike throughout...
      Mar 1, 2024 @ 11:25am
      Mar 1, 2024
      NERydertrailB TownOne of the best trails in the system when...
      Feb 24, 2024 @ 7:15pm
      Feb 24, 2024

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike829368 miles26,089 ft146 miles538 ft
      3413,3743358,546
      E-Bike3119 miles1,004 ft8 miles390 ft
      2,7232507
      Horse4917 miles2,139 ft7 miles456 ft
      45520
      Hike905389 miles26,430 ft154 miles538 ft
      83,350112,380
      Trail Running906389 miles26,430 ft154 miles538 ft
      23,35151,691
      Dirtbike/Moto11 mile98 ft3,766 ft98 ft
      2903
      Observed Trials11 mile98 ft3,766 ft98 ft
      419
      ATV/ORV/OHV11 mile98 ft3,766 ft98 ft
      29010
      Snowmobile14,199 ft69 ft1,227 ft46 ft
      45
      Snowshoe22382 miles6,988 ft31 miles482 ft
      23051128
      Downhill Ski274 miles1,762 ft3 miles259 ft
      3128
      Backcountry Ski278 miles1,801 ft5 miles430 ft
      274154
      Nordic Ski5422 miles2,792 ft10 miles482 ft
      3154262
      • By WillieJacobsz TRAILFORKS Trailforks Map Team & contributors
      • Admins: NEMBAEXEC, BCT, JimBallantyne, brucerioux, pjahnige, mappermook, NEPM
      • #34817 - 1,623 views
      • middlesex county (northwest) activity log | embed map of Middlesex County (Northwest) mountain bike trails | middlesex county (northwest) mountain biking points of interest polygons

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