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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
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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
      • 156
      • 14
      • 453
      • 372
      • 41

      Stats

      Avg Trail Rating
      Trails (view details)
      1,165
      Trails Mountain Bike
      1,048
      Trails E-Bike
      54
      Trails Horse
      52
      Trails Hike
      1,163
      Trails Trail Running
      1,163
      Trails Dirtbike/Moto
      1
      Trails Observed Trials
      1
      Trails ATV/ORV/OHV
      1
      Trails Snowmobile
      1
      Trails Snowshoe
      227
      Trails Downhill Ski
      27
      Trails Backcountry Ski
      27
      Trails Nordic Ski
      61
      Total Distance
      473 miles
      Total Descent
      32,510 ft
      Total Vertical
      539 ft
      Highest Trailhead
      598 ft
      Reports
      4,014
      Photos
      408
      Ridden Counter
      111,646
      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 Route 2025
      Great Brook Farm State Park
      11 miles
      PK: Great Brook Farm Beginner Route 2025
      Great Brook Farm State Park
      4 miles
      PK: Great Brook Farm Advanced Route 2025
      Great Brook Farm State Park
      30 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
      2024 Great Brook Advanced Trifecta Route - PK Memorial
      Great Brook Farm State Park
      30 miles
      BCT Bike Route- Chelmsford to Concord
      Merrimack Valley NEMBA
      20 miles

      Recent Ride Log Activity in Region

      Today
      • 0 rides
      Yesterday
      • 66 rides
      Past Week
      • 351 rides

      Photos of Middlesex County (Northwest) Mountain Bike

      trail: BCT - DH
      2 |
      Jun 11, 2025 @ 8:46am
      Jun 11, 2025
      trail: BCT - DH
      2 |
      Jun 10, 2025 @ 12:35pm
      Jun 10, 2025
      trail: Red Entrance
      0 |
      Jun 6, 2025 @ 9:51am
      Jun 6, 2025
      trail: Jethro Trail
      21 |
      Aug 8, 2024 @ 6:03pm
      Aug 8, 2024
      18 |
      Jul 3, 2024 @ 3:22pm
      Jul 3, 2024
      14 |
      Jul 3, 2024 @ 3:22pm
      Jul 3, 2024
      17 |
      Jul 3, 2024 @ 3:22pm
      Jul 3, 2024
      | 1 comments
      16 |
      Jul 3, 2024 @ 3:22pm
      Jul 3, 2024

      Videos of Middlesex County (Northwest) Mountain Bike

      Though he was ready (he wasn't) mp4
      0:05 | 148 | Mar 4, 2022
      Jimmy & Red, The wall
      trail: Red
      0:19 | 115 | May 9, 2021
      LDTF Night Ride
      trail: B Town
      0:10 | 186 | Oct 17, 2018
      May 28 a early morning Hot ride
      trail: Chicken
      2:42 | 320 | May 28, 2016
      Green Trail  Thunder Mountain MTB lift park
      11:31 | 214 | Jul 10, 2015
      THIS IS JAMAICA
      trail: Chicken
      5:00 | 30726 | Nov 4, 2014
      Russell Mill Pump Track

      0:44 | 671 | Oct 18, 2014

      Current Trail Warnings

      statustraildateconditionuserinfo
      Inner Loop
      Billerica State Forest
      Jun 16, 2025 @ 9:38am
      Jun 16, 2025
      Dryjml01810 Tree down across the trail. 10" diameter....
      Blue Trail
      Flagg Hill
      Jun 14, 2025 @ 1:24pm
      Jun 14, 2025
      WetDougBaumHike North section of Blue trail is...

      Recent Trail Reports

      statustraildateconditioninfouser
      Welcome Back Carter
      Nobscot Hill
      Jun 21, 2025 @ 12:29pm
      16 hours
      Dry Made log rollers into a dirt jump. Could...snoopy12135
      Greenwood
      Nobscot Hill
      Jun 17, 2025 @ 9:43am
      Jun 17, 2025
      Dry Raked and cleared jump trail of roots and...snoopy12135
      BCT - DH
      Nobscot Hill
      Jun 11, 2025 @ 8:47am
      Jun 11, 2025
      Dry Added a rock roller. Depending on what...snoopy12135
      Giggity
      Flagg Hill
      Jun 4, 2025 @ 10:43am
      Jun 4, 2025
      IdealThree Large trees down across trail. ...madpirate
      Purple Martin
      Russell Mill Pond & Town Forest
      Jun 2, 2025 @ 10:37am
      Jun 2, 2025
      IdealKenpfaffmann
      Carbon Force
      Billerica State Forest
      Jun 2, 2025 @ 10:37am
      Jun 2, 2025
      IdealKenpfaffmann
      Jethro Trail
      Nobscot Hill
      May 30, 2025 @ 9:24am
      May 30, 2025
      VariableMuddy at intersection with BungeeRabbiOfRhythms BVNEMBA CSP
      Valley Trail
      Nobscot Hill
      May 30, 2025 @ 9:24am
      May 30, 2025
      IdealWidow maker west of TuesdaysRabbiOfRhythms BVNEMBA CSP
      Tuesday's Gone
      Nobscot Hill
      May 30, 2025 @ 9:24am
      May 30, 2025
      IdealRabbiOfRhythms BVNEMBA CSP
      Tenacious Pine
      Nobscot Hill
      May 30, 2025 @ 9:24am
      May 30, 2025
      IdealRabbiOfRhythms BVNEMBA CSP

      Activity Feed

      usernameactiontypetitledate
      snoopy12135addreportactivity #74272765 and 1 more
      Jun 21, 2025 @ 12:28pm
      16 hours
      Kmckeoughwishlistrouteactivity #74259062
      Jun 21, 2025 @ 9:56am
      18 hours
      Rover00wishlistregionactivity #74191721
      Jun 20, 2025 @ 12:08pm
      2 days
      stumpshredderwishlistbadgeactivity #74170864
      Jun 20, 2025 @ 6:45am
      2 days
      KapitolPhotoaddbadgeactivity #74140894
      Jun 19, 2025 @ 4:57pm
      2 days

      Recent Comments

      usernametypetitlecommentdate
      snoopy12135reportBase CampI was thinking we could put some dirt on it as...
      Jun 9, 2025 @ 11:04am
      Jun 9, 2025
      rlistmantrailCentral Massachusetts BranchNow paved as of may 2025
      May 26, 2025 @ 3:12pm
      May 26, 2025
      cyclocosmtrailPasturelandit doesn'tβ€”at least, not outside the few...
      Nov 11, 2024 @ 8:37am
      Nov 11, 2024
      acekalatrailOrange Goose LoopThree recommended routes for this trail all...
      Oct 6, 2024 @ 7:54am
      Oct 6, 2024
      madpiratetrailFitzgerald's FollyThis track does not extend down the hill to...
      Oct 4, 2024 @ 7:20am
      Oct 4, 2024

      Local Badges


      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike1,043434 miles29,255 ft168 miles538 ft
      3864,0113670,979
      E-Bike5428 miles1,742 ft12 miles525 ft
      3,2752845
      Horse5217 miles2,162 ft7 miles456 ft
      49930
      Hike1,163465 miles30,430 ft179 miles538 ft
      103,988133,152
      Trail Running1,163465 miles30,430 ft179 miles538 ft
      23,98952,623
      Dirtbike/Moto11 mile98 ft3,766 ft98 ft
      2935
      Observed Trials11 mile98 ft3,766 ft98 ft
      520
      ATV/ORV/OHV11 mile98 ft3,766 ft98 ft
      29314
      Snowmobile14,199 ft69 ft1,227 ft46 ft
      105
      Snowshoe22782 miles7,031 ft31 miles482 ft
      23741163
      Downhill Ski274 miles1,762 ft3 miles259 ft
      9196
      Backcountry Ski278 miles1,821 ft5 miles430 ft
      295169
      Nordic Ski6125 miles2,881 ft10 miles482 ft
      3193415
      • By WillieJacobszTF Pro Trailforks & contributors
      • Admins: NEMBAEXEC, BCT, JimBallantyne, brucerioux, pjahnige, mappermook, NEPM
      • #34817 - 2,137 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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