If distance in the sand is all you’re after, there’s nothing in New England that competes with the Atlantic-facing Great Beach of Cape Cod National Seashore. But for more interesting scenery, the walk along Moshup’s Beach beneath the Aquinnah Cliffs on Martha’s Vineyard is stunning, especially when low tide and sunset are in accord. Low tide lets you get closer to the multicolored clays of the cliffs, which glow in the rays of the setting sun. In Maine, Bar Harbor’s Bar Island Sandbar isn’t a typical beach. It connects the town and Bar Island at low tide, and the receding waters reveal rusted anchor chains, twisted driftwood, and other oddities lodged in the sand. Just time your walk to be on the Bar Harbor side as the water rises.