One of the most extraordinary urban trails along old Route 1 (Memorial Drive) belongs to the lucky bike riding citizens of Boston. Now stretching 23 miles from Newton into central Boston along both sides of the Charles River is the Paul Dudley White Bike Path. The path is named after the cardiac surgeon to Dwight D. Eisenhower, who suffered a heart attack during his first term as President in 1955. White was a champion of exercise and cardiac fitness in an era when only 200 people entered the Boston Marathon. (In 2019, more than 30,000 people raced.) No doubt, a few marathon runners have trained along the Paul Dudley White Bike Path!