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 are ideal for hiking, biking, snowshoeing, and cross-country skiing. This guide—the first trail-friendly, waterproof map and guide to the entire BCT—features three easy-to-use topographical maps.

Included are more than 30 multiuse trip suggestions, safety tips, natural and cultural history sidebars, and more. Scale and parking identification allow for easy navigation to trailheads. These maps are based on highly accurate digital trail data compiled by AMC’s staff cartographer.