Indian Hill Cut Through

Dirt route from Indian Hill Rd to Boston Rd, Groton, Middlesex County, Massachusetts

"Nice section and the paved road up to it is beautiful. A bit sandy and a bit rocky in places."

Haystack cut-through

Dirt route from Millstone Hill Rd to Hoyts Wharf Rd, Groton, Middlesex County, Massachusetts

"Relatively easy double-track. Typically gets mowed in October/November by a local scout troop and is nice to ride in the winter and spring. By late summer it's a bit overgrown with high grass (and ticks). The Northern side is a bit rocky. This connects into an extensive mtb trail system."

Cut-through to Cowdry Rd.

Gravel route from Indian Ridge Terrace to Cowdry Hill Rd, Westford, Middlesex County, Massachusetts

"Relatively rough gravel. Some double-track and single track leaves this trail heading up Snake Hill, but it's a bit more mountain bike terrain than gravel. This track, though, it easy enough on a gravel bike."

Whitman

Dirt route from Whitman Rd to Boston Rd, Groton, Middlesex County, Massachusetts

"Mixed Road surface - turns to gravel/dirt for a bit, and back and forth with paved"

Old Rail Bed Behind Stonybrook

Dirt route from Forrest Rd to Beacon St, Westford, Middlesex County, Massachusetts

"To the East of Nutting it gets pretty sandy and a bit overgrown in places."

Cow Pond Cutthrough

Singletrack route from Bridge St to Cow Pond Brook Rd, Groton, Middlesex County, Massachusetts

"Cut through over toward Old Dunstable Rd. from Cow Pond Brook + some loops in the woods (these also connect up to Bear Hill Quarry trails)"

Stone Arch Bridge (Westford): the old Nashua-Acton rail line

Dirt route from Milot Rd to Cold Spring Rd, Westford, Middlesex County, Massachusetts

"Stone-Arch Bridge trail - sin wave of an old rail bed"

Nashua-Acton rail line by Massapoag

Dirt route from Groton St to Cow Pond Brook Rd, Groton, Middlesex County, Massachusetts

"Same old sin-wave pattern rail bed. Mostly double-track w/ a few single-track sections."

Buckboard to Tadmuck Cut-through

Singletrack route from Buckboard Dr to Dana Dr, Westford, Middlesex County, Massachusetts

"Easy going singletrack"

Singletrack spur off estabrook

Singletrack route from Estabrook Rd to Monument St, Concord, Middlesex County, Massachusetts

Estabrook Road

Dirt route from Estabrook Rd to Estabrook Rd, Concord, Middlesex County, Massachusetts

"Doubletrack - a bit rocky in places, but very ridable on a gravel bike or even a road bike. Great way to/from Concord when you want to avoid traffic."

Kemp St. to Dan Parker to Martin's Pond

Dirt route from Kemp St to Rocky Hill Rd, Groton, Middlesex County, Massachusetts

"Mix of road types. Kemp St. goes from pavement to gravel/dirt. Dan Parker is rideable double-track at times and very rough for skinny tires in other spots (like a logging road -- big ruts and tire tracks that make it hard with 32mm tires like mine). This route includes a trail/single track bit that is a little sandy but mostly rideable and actually much smoother to bike than the wider Dan Parker Rd."

Cowdry Hill Rd

Dirt route on Cowdry Hill Rd, Westford, Middlesex County, Massachusetts

"Riding south, paved road becomes dirt road becomes unmaintained dirt road -- a portion of it very rough -- before emerging it emerges onto a mix of pavement/dirt."

Cranberry Bogs

Dirt route from Elm St to Martin St, Carlisle, Middlesex County, Massachusetts

"Mostly easy biking / wide dirt and gravel trails. A few bits of singletrack you might need to walk depending on your bike and conditions."

Burgess Pond Loops

Dirt route from Depot St to Coakley Circle, Westford, Middlesex County, Massachusetts

"A mixture of surfaces: there's some roads (mixed pavement and dirt) behind the old East Boston Camps, which then turns into singletrack for a bit followed by a mixture of wide easy trails and singletrack. Makes for a nice loop or a connection to the gravel road up behind Stony Brook."

Trolley Bed Behind Stony Brook

Gravel route from Nutting Rd to Beacon St, Westford, Middlesex County, Massachusetts

"Old Trolley Bed behind Stony Brook - nice cut through. Mostly pretty hard packed -- a few stretches with looser gravel. Can get muddy in the spring, but most of the year this is a breeze."