Great Brook Farm State Park Professional Review and Guide
"Located in the town of Carlisle, about 12 miles north of Concord, 25 miles northwest of Boston. The terrain is relatively flat, with small hills. Some of the single-track trails have short, steep ascents, and the pipeline to the north has longer climbs and descents in it.
There are restrooms, water, and ice cream at the trailhead. All other services are available in nearby towns like Carlisle, Lincoln, Bedford, and Concord. This park is popular among hikers and horseback riders, as well as cross-country skiers. The moderate 8-mile ride in this book will first take you past wetlands, where peeper frogs call insistently in the spring. Along the Woodchuck Trail (to the east), you can then cruise past hundreds of bright-green pine saplings growing under their cathedral-like progenitors."