The Bay Circuit Trail Map & Guide is the essential day-hiker's companion to the 200-mile-long trail and greenway encircling Boston. Extending through 34 towns, this "outer Emerald Necklace" stretches from Plum Island in the north to Kingston Bay in the south. Within a stone's throw for millions of people in eastern Massachusetts, the trail and greenway is ideal for hiking, biking, snowshoeing, and cross-country skiing. This guide--the first trail-friendly,...