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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.
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
inches
US Cell Coverage
Legend
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.
Only show trails with NO bikes.
Save the current map location and zoom level as your default home location whenever this page is loaded.
SavePopular Trail Networks
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No description for Middlesex County (Northwest) has been added yet!
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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
- Merrimack Valley NEMBA (612)
- Billerica (48)
- Boxborough (53)
- Flagg Hill (17)
- Hager Land (10)
- Have Not Pond Conservation (3)
- Robinson Conservation Land (0)
- Steele Farm (11)
- Carlisle (108)
- Chelmsford (45)
- Dunstable (12)
- Flat Rock Hill (11)
- Groton (144)
- Littleton (43)
- Lowell (75)
- pepperell (1)
- Stow (58)
- Tyngsborough (41)
- Bear Hill (37)
- Elbow Meadow (2)
- Westford (43)
- Acton (118)
- ABRHS Trails (1)
- Acton Arboretum (9)
- Anderson Conservation Land (3)
- Bulette Conservation Land (6)
- Grassy Pond (7)
- Great Hill Conservation Area (18)
- Guggins Brook (2)
- Jenks (3)
- Morrison Farm (6)
- Nagog Hill Conservation Land (6)
- Nara Park (1)
- Pratts Brook Conservation Area (5)
- Spring Hill (5)
- Stoneymeade- Annursnac Conservation (9)
- Weatherbee Conservation Area (3)
- Wills Hole Town Forest (5)
- Wright Hill Conservation Area (4)
- Ayer (11)
- Concord (158)
- Maynard (16)
- Summer Hill (7)
- Shirley (8)
- Sudbury (10)
- Tewksbury (37)
- Nobscot Hill (41)
Popular Middlesex County (Northwest) Trails
| status | title | difficulty | rating |
|---|---|---|---|
| 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
| title | rating | distance |
|---|---|---|
| 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 |
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
trail: 2022 Trail Reroute
18 |
Jul 3, 2024 @ 3:22pm
Jul 3, 2024
trail: 2022 Trail Reroute
14 |
Jul 3, 2024 @ 3:22pm
Jul 3, 2024
trail: 2022 Trail Reroute
17 | | 1 comments
Jul 3, 2024 @ 3:22pm
Jul 3, 2024
trail: 2022 Trail Reroute
16 |
Jul 3, 2024 @ 3:22pm
Jul 3, 2024Videos of Middlesex County (Northwest) Mountain Bike
0:05 |
148 |
Mar 4, 2022
0:05 |
|
Mar 4, 2022
trail: Red
0:19 |
115 |
May 9, 2021
trail: B Town
0:10 |
186 |
Oct 17, 2018
trail: Chicken
2:42 |
320 |
May 28, 2016
trail: Green Trail
11:31 |
214 |
Jul 10, 2015
trail: Chicken
5:00 |
30726 |
Nov 4, 2014
0:44 |
671 |
Oct 18, 2014
Current Trail Warnings
| status | trail | date | condition | user | info |
|---|---|---|---|---|---|
| Inner Loop Billerica State Forest | Jun 16, 2025 @ 9:38am Jun 16, 2025 | Dry | jml01810 | Tree down across the trail. 10" diameter.... | |
| Blue Trail Flagg Hill | Jun 14, 2025 @ 1:24pm Jun 14, 2025 | Wet | DougBaum | Hike North section of Blue trail is... |
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Welcome Back Carter Nobscot Hill | Jun 21, 2025 @ 12:29pm 16 hours | Dry | snoopy12135 | ||
| Greenwood Nobscot Hill | Jun 17, 2025 @ 9:43am Jun 17, 2025 | Dry | snoopy12135 | ||
| BCT - DH Nobscot Hill | Jun 11, 2025 @ 8:47am Jun 11, 2025 | Dry | snoopy12135 | ||
| Giggity Flagg Hill | Jun 4, 2025 @ 10:43am Jun 4, 2025 | Ideal | madpirate | ||
| Purple Martin Russell Mill Pond & Town Forest | Jun 2, 2025 @ 10:37am Jun 2, 2025 | Ideal | Kenpfaffmann | ||
| Carbon Force Billerica State Forest | Jun 2, 2025 @ 10:37am Jun 2, 2025 | Ideal | Kenpfaffmann | ||
| Jethro Trail Nobscot Hill | May 30, 2025 @ 9:24am May 30, 2025 | Variable | RabbiOfRhythms BVNEMBA CSP | ||
| Valley Trail Nobscot Hill | May 30, 2025 @ 9:24am May 30, 2025 | Ideal | RabbiOfRhythms BVNEMBA CSP | ||
| Tuesday's Gone Nobscot Hill | May 30, 2025 @ 9:24am May 30, 2025 | Ideal | RabbiOfRhythms BVNEMBA CSP | ||
| Tenacious Pine Nobscot Hill | May 30, 2025 @ 9:24am May 30, 2025 | Ideal | RabbiOfRhythms BVNEMBA CSP |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| snoopy12135 | add | report | activity #74272765 and 1 more | Jun 21, 2025 @ 12:28pm 16 hours |
| Kmckeough | wishlist | route | activity #74259062 | Jun 21, 2025 @ 9:56am 18 hours |
| Rover00 | wishlist | region | activity #74191721 | Jun 20, 2025 @ 12:08pm 2 days |
| stumpshredder | wishlist | badge | activity #74170864 | Jun 20, 2025 @ 6:45am 2 days |
| KapitolPhoto | add | badge | activity #74140894 | Jun 19, 2025 @ 4:57pm 2 days |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| report | I was thinking we could put some dirt on it as... | Jun 9, 2025 @ 11:04am Jun 9, 2025 | ||
| trail | Now paved as of may 2025 | May 26, 2025 @ 3:12pm May 26, 2025 | ||
| trail | it doesn't—at least, not outside the few... | Nov 11, 2024 @ 8:37am Nov 11, 2024 | ||
| trail | Three recommended routes for this trail all... | Oct 6, 2024 @ 7:54am Oct 6, 2024 | ||
| trail | This track does not extend down the hill to... | Oct 4, 2024 @ 7:20am Oct 4, 2024 |
Local Badges
-
The Blackstone | The Knotty Nobscot 20242 awarded -
The Blackstone 2025 — Summit & Send2 awarded -
The Blackstone 2024 — Nobscot102 awarded -
Climbing 10k Badge2 awarded -
Epic Mountain Bike Climb 2k0 awarded -
Completionist0 awarded
Bike & Skill Parks
| name | type | city | rating |
|---|---|---|---|
| Russell Mill Pump Track | skill park | Chelmsford | |
| Acton Pumptrack | skill park | Acton | |
| Billerica BMX | skill park | Billerica | |
| Livingston Street Skatepark | skill park | Tewksbury | |
| Concord-Carlisle Skatepark | skill park | Concord |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 1,043 | 434 miles | 29,255 ft | 168 miles | 538 ft | 386 | 4,011 | 36 | 70,979 | |||
| E-Bike | 54 | 28 miles | 1,742 ft | 12 miles | 525 ft | 3,275 | 2 | 845 | ||||
| Horse | 52 | 17 miles | 2,162 ft | 7 miles | 456 ft | 499 | 30 | |||||
| Hike | 1,163 | 465 miles | 30,430 ft | 179 miles | 538 ft | 10 | 3,988 | 13 | 3,152 | |||
| Trail Running | 1,163 | 465 miles | 30,430 ft | 179 miles | 538 ft | 2 | 3,989 | 5 | 2,623 | |||
| Dirtbike/Moto | 1 | 1 mile | 98 ft | 3,766 ft | 98 ft | 293 | 5 | |||||
| Observed Trials | 1 | 1 mile | 98 ft | 3,766 ft | 98 ft | 5 | 20 | |||||
| ATV/ORV/OHV | 1 | 1 mile | 98 ft | 3,766 ft | 98 ft | 293 | 14 | |||||
| Snowmobile | 1 | 4,199 ft | 69 ft | 1,227 ft | 46 ft | 10 | 5 | |||||
| Snowshoe | 227 | 82 miles | 7,031 ft | 31 miles | 482 ft | 2 | 374 | 1 | 163 | |||
| Downhill Ski | 27 | 4 miles | 1,762 ft | 3 miles | 259 ft | 9 | 196 | |||||
| Backcountry Ski | 27 | 8 miles | 1,821 ft | 5 miles | 430 ft | 2 | 95 | 1 | 69 | |||
| Nordic Ski | 61 | 25 miles | 2,881 ft | 10 miles | 482 ft | 3 | 193 | 415 |
- By WillieJacobsz
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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