Nowadays everyone seems to run. If it's not marathons, it's at least 5Ks or half-marathons. But in the 1970s, running as a serious hobby was just beginning, and the king of endurance was Bill Rodgers. With a training discipline of 150 miles per week, Rodgers was out on the road constantly. Rodgers' story centers on the 1975 Boston Marathon, the race that made him famous. When he crossed that finish line, he led just over 2000 racers. Now over 20,000 participate in Boston each year, the total number involved in the sport nationally in 1975.