I run around 3 AM. It's always dark ... LOL. However, I don't have to constantly watch for cars/traffic. I know my "clock" is different (little sleep, love the morning, etc.) but it's what I prefer. I get to work and my run is done. However, I work in DC and one day I'd like to run the Mall. Traffic doesn't concern me as much as all the yuppies in the daglo $500 running outfits might run me over ... I don't understand the stretching at every corner. I've thought about falling in behind the Marines from 8th and I or the Old Guard doin' the shuffle.
I run before work when the sun rises early. I prefer it, honestly. Feel great all day.
I need a little bit of light, though.