"Bobbi Gibb, first woman to run the Boston Marathon in 1966, running without a number because women were not allowed into the race." The police ran after her and tried to arrest her. Women were not considered strong enough to run the marathon." Let's not forget this was only 50 years ago! We've come a long way.
The #WorldMarathonMajors is a series of six of the largest and most renowned Marathons in the world: Tokyo Marathon, Boston Marathon, London Marathon, Berlin Marathon, Chicago Marathon and New York City Marathon: http://www.runningyourlife.nl/world-marathon-majors/