Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail 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%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
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  • < 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
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
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Max Vehicle Width

Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Sight Sight
  • Restrooms Restrooms
  • eBike Charging Point eBike Charging Point
  • Water Fountain/Source Water Fountain/Source
  • Gate Gate
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Ladder Ladder
  • Stairs Stairs
  • Bridge Bridge
  • Boardwalk Boardwalk
  • Camping Camping
  • Cabin Cabin
  • Lodge Lodge
  • Bear Cache Bear Cache
  • Dock Dock
  • Ranger Station Ranger Station
  • Summit Summit
  • Other Other
      There are three recommended routes at Great Brook State Farm which will give a first time rider a good introduction to the riding area.:

      - a 4.1 miles beginner ride,
      - an 11.6 miles intermediate loop, and
      - a 13.6 miles "advanced" loop.

      All three rides start from the XC Ski parking lot. The beginner ride pretty much sticks to the carriage paths and wider trails and is novice and family-friendly. Both the intermediate and advanced loops start by crossing Lowell Rd from the parking area and climbing Acorn Hill, then returns to the parking lot and heads off to the more challenging trails of Indian Hill and Stone Row. The intermediate loop returns from Acorn hill across the street, then navigates many of the singletrack trails going counter-clockwise around the park. The advanced loop includes most of the decent trails in the park.

      Info about Great Brook Farm State Park:

      Great Brook State Park may be the best family mountain biking area in Massachusetts. The park has a variety of facilities for numerous actitivies. The park includes ample parking, a working dairy farm (and home-made ice cream stand), a duck pond and even a sort-of kiddie-zoo with a few barnyard animals. There's a variety of trails through meadows, around pastures and through woods for hiking, biking, XC-skiing and equestrian activities.

      Great Brook is a great place to go for any outing with a group of poeple, some of which do, and some of which do not mountain bike. There are numerous nice spots for setting a blanket and picnicking. Riders can go off and cycle short loops of a couple miles. While hikers can go off and hike. There's some ponds where children may enjoy fishing. Many of the trails at Great Brook are wide, level, double-track which are ideally suited to family rides. These double-tracks are also quite attractive since they are very natural in texture and are not rutted like jeep roads.

      In addition to the double-tracks are a variety of very easy single-tracks. Many of these are paths are routed around the perimeters of meadows and pastures. Please stay on the paths and avoid cutting across open spaces.

      Some of the more out-of-the-way trails offer more challenge. The Wood chuck trail is a nice loop with a couple larger hills. It isn't far off the beaten track so you do want to keep a look out for hikers, horses and other bikers. One of my favorite rides at Great Brook is the Heart Break Ridge. This trail goes out for a couple of miles and then loops back on newly built singletrack. That turns what once was an out and back into a fun loop. This trail starts with a short steep climb on a newly built siwtcback. It's tough to clean the last fifteen feet or so because of some nasty roots. The trail continues with some moderately technical but not nasty single-track along the top of a ridge. The trail then becomes narrow but smooth and fast 3rd-ring single track. Possibly the most difficult trail in the park is Stone Row, located in the northern quadrant of the park.

      Great Brook is very popular since it is such a great family and beginner area. Because it is such a popular family area, it's not a great idea for advanced riders to come to Great Brook to do their serious weekend pounding. It's wise for fast riders to avoid this park on nice summer weekends. It certainly is a good idea to avoid riding hard on the main trails. The main trails are frequented by family groups of four of five people, both hikers and bikers, including young kids, often on little bikes. And you'll encounter lots of horses. I'd suggest cooling it when around riding near non bikers. The more out-of-the-way s ingle-tracks offer more challenge and rarely have anyone else on them. In recent years NEMBA has been building new singletracks and constructing bridges. Most of these are on the newest map which is usually available as a handout in the main parking area.

      Great Brook Farm State Park is a wonderful destination for a moderate mountain bike ride through rolling secondary woodlands, old farm carriage roads and rocky eskers. It is a working farm and features a popular ice cream stand for an après-ride treat. Parking is $2. NEMBA has volunteered and stewarded Great Brook since 1995, and built some of the most popular trails enjoyed by mountain bikers: Stone Row, Keyes Loop, Fern Loop, Deer Run and sections of the Acorn Trail, Toffett Loop and Indian Hill. NEMBA installed all of the water crossing boardwalks, and made a $3000 donation for the purchase of adjacent property to expand the park.

      Great Brook Farm is shared-use park in the best sense of the word. In addition to mountain biking, horseback riding is very popular, as is trail running, walking, and dog walking. Many people come to Great Brook to picnic around the pond, view the farm animals and take a tour of the farmyard with a DCR interpreter. All the different park users are friendly and respectful towards one another, and user conflict is minimal – a testament to the even-handed style of the land manager. During the winter, the park is concessioned as a dedicated Great Brook Ski Touring Center and only cross-country skiing is allowed on the majority of the trails (only the trails west of Lowell Street are open to non-skiers). Until 2007, the Greater Boston chapter of NEMBA kept Great Brook under its stewardship wing; however, since Great Brook and the nearby Lowell-Dracut State Forest are managed by the same DCR land manager, the Merrimack Valley NEMBA chapter is now the main steward, with support and volunteer help from Greater Boston NEMBA.
      Primary Trail Type: Cross-Country
      eBikes Allowed: No
      Main Parking Area google parking directions
      Region Details
      • 1
      • 6
      • 30
      • 17

      Region Status
      Open as of Oct 9, 2020
      Local Trail Association


      Avg Trail Rating
      Trails (view details)
      Trails Mountain Bike
      Trails Hike
      Trails Trail Running
      Total Distance
      21 miles
      Total Descent
      1,687 ft
      Total Vertical
      162 ft
      Highest Trailhead
      293 ft
      Ridden Counter

      Photos of Great Brook Farm State Park Mountain Bike

      trail: Acorn Trail
      8 |
      Aug 13, 2020 @ 2:01pm
      Aug 13, 2020
      trail: Acorn Trail
      9 |
      Aug 13, 2020 @ 1:12pm
      Aug 13, 2020
      52 |
      Jul 21, 2019 @ 8:34am
      Jul 21, 2019
      trail: Acorn North
      74 |
      Jul 21, 2019 @ 8:34am
      Jul 21, 2019

      Videos of Great Brook Farm State Park Mountain Bike

      May 28 a early morning Hot ride
      trail: Chicken
      2:42 | 240 | May 28, 2016
      trail: Chicken
      5:00 | 30610 | Nov 4, 2014
      chicken BAKAK!!
      trail: Chicken
      0:58 | 170 | Oct 17, 2008

      Current Trail Warnings

      Great Brook Trail
      Oct 9, 2020 @ 5:43pm
      Oct 9, 2020
      DryMiles170 Trees down

      Recent Trail Reports

      Activity Feed

      user #1791795natescancommenttrailStone Row
      Oct 22, 2020 @ 4:23pm
      2 days
      user #1933870Miles170addreportGreat Brook Trail
      Oct 9, 2020 @ 5:43pm
      Oct 9, 2020
      user #1765630FastcubesolverwishlisttrailAcorn Trail
      Sep 24, 2020 @ 8:31am
      Sep 24, 2020
      user #2310723camSullyriddentrailTOwn Forest Trail and 1 more
      Sep 13, 2020 @ 7:22pm
      Sep 13, 2020
      user #2310723camSullyriddentrailAcorn Trail West and 1 more
      Sep 12, 2020 @ 4:41pm
      Sep 12, 2020

      Recent Comments

      user #1791795natescantrailStone RowThis is probably the most (and only) technical...
      Oct 22, 2020 @ 4:23pm
      2 days
      user #2360322AemancinitrailIndian HillMaybe on a 90s xc Bike! Haha that’s what I...
      Aug 22, 2020 @ 5:36pm
      Aug 22, 2020
      user #1339923MTBJGtrailIndian HillQuick little blast up and down. Not sure about...
      Feb 24, 2020 @ 8:24am
      Feb 24, 2020

      Nearby Areas

      Russell Mill Pond & Town Forest 8 7 22.1 km
      Billerica State Forest 4 123 km
      Landlocked Forest 4 33 67.2 km
      Lowell-Dracut-Tyngsboro State Forest 11 17 48 km
      Sandy Pond Trails 2 28.9 km

      Local Badges

      • By SofakingfastTrailforks Pro Subscriber MV NEMBA & contributors
      • Admins: MASS DCR, MV NEMBA
      • #12071 - 2,423 views
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