Begin training now for the Southern Tennessee Plunge Marathon and Half Marathon to be held October 2, in Winchester. The event is cosponsored by the Southern Tennessee Medical Center, Emerald-Hodgson Hospital and the City of Winchester.  This event is certifi ed and sanctioned, making it a qualifying race for the Boston Marathon. The course runs through the scenic countryside of southern middle Tennessee with majestic views of the Cumberland Mountains and beautiful Tims Ford Lake.  Information and registration is available on the event website www.southerntennesseemarathon.com or <www.active.com>.  The Southern Tennessee Plunge benefits multiple local charities, including Volunteers in Medicine and the Prevention Coalition. Watch the Sewanee Mountain Messenger for future details.