Races: Marathon The Atlanta Marathon (ages 18 & up) is the perfect opportunity for both first-timers and seasoned runners to discover Atlanta one mile at a time, while achieving their marathon goals. Below is general information regarding the event. Course Description The Atlanta Marathon course starts and finishes at Atlantic Station near Midtown Atlanta. The 26.2 mile course gives participants a tour of Atlanta, running past well known Atlanta sites and neighborhoods including Georgia Tech, Centennial Olympic Park, the Georgia Aquarium, Turner Field, Grant Park, Inman Park, Virginia-Highland, Oakland Cemetery, Old Fourth Ward, Piedmont Park, Morningside and Buckhead.