I enjoy Piedmont for the most part. Occasional events that sometimes make parking difficult but once that's out of the way there's usually still parts of the park that you'll have space to run in. Sometimes you'll just have to weave through a crowd. I like that I can escape from the park itself and run through the city. If you come through the main entrance and just stay to your right it's almost an exact mile from your start location (just something to know).
Jon T. on Piedmont Park Loop
This place is great. We played kickball, flew kites and just generally enjoyed the people watching. Highly recommend as a family or friend hangout!