Army Ten-Miler and Military District of Washington

The Army Ten-Miler is produced by the Military District of Washington (MDW).The MDW serves as the Army Forces Component and core staff element of the Joint Force Headquarters National Capital Region to conduct operations that deter, prevent, and respond to threats aimed at the National Capital Region; and conducts world-class ceremonial, musical and special events in support of our Nation's leadership. Over 600 Soldiers from 3rd Infantry Regiment (The Old Guard) volunteer race weekend.
Now in its 31st year, the ATM is held each October in Washington, DC. All race proceeds benefit Soldier MWR programs.

 http://www.armytenmiler.com/about.aspx