I’m back from a long weekend bike trip: Four days, twenty-five hours in the saddle, 1,1166 miles. (Some riders do that mileage in one day!) I had a vague idea that I wanted to go to the Adirondacks, or maybe Nantucket. Using the ancient principle of flipping a coin, then doing the opposite thing, I made a kind of big lopsided loop from the Catskills, through the Berkshires, to Martha’s Vineyard and back again.