Boston
One of the best known sporting events in the city is the Boston Marathon, the 26.2-mile (42.2 km) race which is the world's oldest annual marathon, run on Patriots' Day in April. On April 15, 2013, two explosions killed three people and injured hundreds at the marathon. Another major annual event is the Head of the Charles Regatta, held in October.
How many people were killed in the explosions at the Boston marathon?
three
On April 15, 2013, two explosions killed three people and injured hundreds at the marathon.
the Boston marathon