Depends if you want to see the ignition blast on the launch pad, or just see the rocket fly thru the air. To see the lift-off, you need to be within about 15 miles or so. Most people just find a place to park along US1 in Titusville. If you can see the huge Vehicle Assembly Building, you will see the lift-off. As far as seeing the rocket in the air, you can do that from over 100 miles away, depending on the cloud cover. We were at the Magic Kingdom last December and saw the shuttle take off. It was a night flight, so the ball of fire in the sky was easy to see. I've also seen photos taken from as far away as Cabbage Key (near Captiva/Sanibel) and you could see the smoke from the rocket.