Runners at the start of the 2010 Army Ten-Miler in Washington, D.C.
On Sunday, approximately 35,000 runners from around the world will race through the heart of D.C. in the 29th annual Army Ten-Miler. It's the first Army Ten-Miler since April's Boston Marathon bombing, and it comes as D.C. recovers from a shooting at the Washington Navy Yard and a fatal police chase at the U.S. Capitol.
While runners have always had to pass through a security checkpoint, Race Director Jim Vandak says this year each of the expected 5,000 spectators will also have to pass through security.
"Safety is very important," he says. "That our runners have a good experience and a safe experience."
The course takes runners past many D.C. landmarks, including the Lincoln and Jefferson Memorials, both of which were closed during the partial government shutdown.
Kerri Gallagher, the defending champion of the women's ten-mile, says the race could represent a step forward.
"The race is running, a lot of people trained hard for it," says Gallagher. "Keeps a sense of normalcy."
All proceeds will go to the Army's Morale, Welfare and Recreation programs.
Correction: An earlier version of this story stated that approximately 3,500 runners participated in the race. It is approximately 35,000 runners.