JOIN US FOR THE ONCE-A-YEAR OPPORTUNITY TO EXPERIENCE THE CHEVROLET DETROIT GRAND PRIX COURSE JUST LIKE THE RACE CAR DRIVERS DO. RUNNERS & WALKERS WILL START FROM THE OFFICIAL DETROIT GRAND PRIX STARTING LINE AND EXPERIENCE TURNS 4-13 BEFORE CROSSING UNDER THE CHECKERED FLAG IN THE SHADOW OF THE CARS.COM GRANDSTAND 1.