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Shannon Colavecchio

A runner reacts near Kenmore Square after two bombs exploded during the 117th Boston Marathon on April 15, 2013 in Boston, Massachusetts. (Photo by Alex Trautwig/Getty Images)

Fla. Runners To Finish Final 5 Miles Of Marathon

More than 20,000 people run the Boston Marathon every year but not everyone finished this year due to the deadly bombings at the finish line.

CBS Miami–04/20/2013