Russell Mill Pond & Town Forest

Great Brook Farm State Park

Yudicky Farm

Groton Town Forest

Mill Pond

Landlocked Forest

Harold Parker State Forest

To the west of Trotting Park Road is Lake Althea and the Scarlet swamp. The west side is also where some of the funnest, most popular, singletrack in the park is. Just out of the main entrance, hang a left and get ready to rip.
The east side of the park is where the majority of the trail system of Lowell-Dracut-Tyngsboro State Forest. On this side you will also find what is called the \"playground\", which consists of big natural rocks left in the area by retreating glaciers. At the playground you will be able to hone your rolling and hucking skills. Be advised: for experienced riders only.
Update: Some downhill trails are being built to the north side of the park on Whortle-Berry Hill. From the main entrance duck into the trails on the left-side. You\'ll have to pedal a ways out and ride a fire road to get there but it will be worth it. Along the way be sure to stop and play on the skinny made out of a fallen tree. The climb to the top of Whortle-Berry Hill is a bitch, but the trails is cut well with a bunch if switchbacks. Once at the top you have two choices of trails. I enjoyed the one furthest from where the climb drop you, but explore them both to find your favorite!