There are two ways to look up the time it will take to get from one building to the other. There is a map you can use to select the buildings. There is also a list of buildings you can choose from.
Your position is shown on the map along with all of the campus buildings. Tapping on a building will bring up a list of other buildings to choose from indicating your destination. It will display four walking speeds and the time (in minutes) it will take to walk to the chosen building from the selected list.