What are the most famous marathon races in the world?

Answer 1

The five marathon "majors" are Boston, Berlin, Chicago, London and New York. Other, but by no means an exaustive list, marathons that have large participation include the Marine Corp Marathon, LA Marathon and the Paris Marathon.

Answer 2

The most famous marathons are the New York, London and Sydney marathons, in addition to the Olympic marathon every 4 years.