I never find myself able to take in scenery/surroundings when running, maybe I'm just blowing out my arse too much. When doing the GSR events it takes me all my time to remember to look up and down river from the Kingston bridge as I cross.
If I'm feeling good, I might check out some nice female ass in front of me, but mostly I find myself picking a spot on the ground a few yards in front of me and fixating on running over it (particularly on uphills).
I find I can either run at an easy pace and take in surroundings, or push at my limit and could be running in a tunnel for all I take in round about me.