This run consists of two out-and-backs from Fountainhead Regional Park. The first part of the run, 7.2 miles, is the famous Do Loop of Bull Run Run and the Women’s Half Marathon. The second part is a 12 mile out-and-back on the blue-blazed Bull Run/Occoquan Trail, turning around at Bull Run Marina.
Note that the Do Loop is very difficult to navigate without prior familiarity. If you are unsure and cannot run with someone else, we recommend just doing the out-and-back on the Bull Run/Occoquan Trail. You can also tailor your distance on this out-and-back, by turning around before or after Bull Run Marina.