CanI run a 4:45 mile

:72, :72, :72, :68

:68, :74, :80, :90

You do have far more speed than endurance. are you trying to be a 400/800 guy who happens to be thrown into the mile? Or are you actually trying to be a good 800/miler? If you are trying to be a miler, definitely need a lot more endurance. But regardless I would think a 4:45 would be incredibly possible. If you're a 400/800 guy it'll be a struggle though. Watch out for going out too fast.

67 72 75 71

if you can get through 3 laps in 180 you could practically walk the last lap:

60, 60, 60, 105

400/800 guy

Ill say 4:43

give up on the mile and focus on the 400.

your 400 is far better than even your 2:03 800. If you were as good at 800 as 400, you'd be running 1:56.

If you focus on that 400 you'll go sub-50. Going sub-50 rules. I wish I could do that.