The term 'Does a Marathon' can be summarized by the solution 'RUNS' which is a four letter word. A marathon is a long-distance running event, typically of 26 miles and 385 yards (42.195 km). It is one of the most popular types of long-distance running events in the world, with thousands of participants in each race. The goal of a marathon is to complete the race in the shortest amount of time possible.