Filled with rolling hills that unfold along rural country roads just to the west of Lexington, the Run the Bluegrass Half Marathon course starts and finishes at the famed Keeneland Race Course and takes runners on a tour of the thoroughbred horse farms that fill the countryside here. While there are occasional tree-lined stretches, much of the course is out in the open sun, so sunscreen, shades and a good hat will be a must.
(MORE: Run the Bluegrass Half Marathon event details)