Blue is a hiking trail in Concord, Massachusetts. It is within Harrington Park. It is 0.1 miles long and begins at 122 feet altitude. Traveling the entire trail is 0.2 miles with a total elevation gain of 18 feet. The Harrington Park conservation and the Harrington Park Parking Lot parking are near the trailhead. There are also a wetland, a wood, a viewpoint, and a bare rock. The trail ends near the Harrington Park conservation.
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