The main campus of the University (i.e. excluding the medical school) takes about 15 minutes maximum to walk from one side to the other. Most buildings are between Power and Cushing streets north-south, and Prospect and Hope east-west.
The university has three campuses. Click on the related links section (College Board) indicated directly below this answer section. It will take you to the College Board site where you can choose...
The University of Indianapolis has a satellite campus in Athens, Greece. They also have many other campuses around the world that they have close contact with and students can study at these campuses.