Personal safety for excersing outside after dark

I realized the other night that was in non-safe condition. While my son was playing basketball I went to run  on the track in the same complex. From what I know this is a very safe place to be. Before I was done it got dark.  The complex has lighting that only hits half of the track.  The far half of the track was in total darkness and next to the woods. At that point it occured to me I was participating in an unsafety activity and went back inside. Evening outside excersise is suspended till I have a better plan in place.