CVG is not a large airport. Since I'm taking it you'll be connecting I would think your in same terminal. If your on Delta they use Terminals, A, B & C
C is their comair/express flights and you take a shuttle bus from B to get there. Otherwise they have a tram/train that runs from security check to A, then to B. It doesn't take long to go from one to the other. You can actually walk to A if you want a "little" exercise.
I'm sure you can go to cinn. international website and see layout of the airport if you will be connecting on another airline.
MY dh flys out of CVG all the time for work and we always use because DL has direct flts because of being one of their hubs.