a lot people started the 2009 marathon
55
36,000 people competed in the 2014 Boston marathon
The number of people who ran the Arizona half marathon in 2010 were roughly 7,800 people.
zero went
40,000
Enough
37,000
Over 11,000 people
37,000
12756
1,531 (2013)
over 1 million. If you are wondering why so many, it is because it is where the Modern Marathon distance was decided in 1912.