This happened to me about 6 years ago, me and few friends were hanging out and decided to go to a ditch (just plain land that had a few tracks). To get there we had to go under the street through I guess a tunnel or so (I don't know what they are actually called). There is a ramp you have to go up to get to the ditch area. I was the first one to run up the ramp and as soon and I got up there I saw a ghost running one of the tracks, he looked like an actual human but as a white mist. It was still day time and I saw him very clearly. I even saw what he was wearing; he was wearing very short shorts, a jersey and long socks. Like the outfits that they use to wear in the old days for track or baseball. I was stunned and stood there which felt like forever, like time paused for a bit. He was just minding his own business running the track and just disappeared into thin air. My friends had ran a up there a little after me and I asked them in excitement if the say what I saw. Nobody else saw him, they did not believe me.
I don't care if they didn't believe me and thought I was crazy or just seeing things, but I know what I saw. It was actually a cool experience, not scary at all and actually happy I saw that. I have seen other things from the corner of my eye but even until this day I have not seen anything like I did that day.