Runners lace up your sneakers. The inaugural Clarksville Half Marathon and 5K is about to take over the streets this weekend. Come Saturday, November 2, nearly 850 athletes will pace through the picturesque routes of Clarksville for the event sponsored by Hankook Tire Manufacturing Tennessee, as reported by the City of Clarksville. But with the foot race comes a caveat for residents – road closures and detours starting bright and early.