This October and November, attention turns to the Chicago and New York marathons, two of the largest races in the world, attracting tens of thousands of runners and spectator crowds estimated in the millions
The Chicago Marathon is held in October, while the New York Marathon takes place in November.
Both marathons attract tens of thousands of runners each year.
Spectator crowds are estimated in the millions for both marathons.
Yes, both marathons often feature various events leading up to race day, including expos and community activities.