James DeSalvo, Winthrop, crosses the Chewuch River Bridge en route to a second place finish at last Sunday’s 26.2-mile Winthrop Marathon. Photo by Mike Maltais   BY MIKE MALTAIS On a day that appeared to be ready-made for runners, nearly 200 took to local roads for the fourth annual 26.2-mile Winthrop Marathon and 13.1-mile Half...