To provide a mechanism that makes it possible to suppress increase in electric power consumption while assuring accuracy of measuring a distance between devices. there is provided a control device comprising: a control section configured to cause a ranging process of measuring a distance between communication devices to be executed a designated number of times, and control a subsequent process that is a process of using a ranging value that satisfies a designated allowable value, on a basis of whether or not at least any of a plurality of ranging values that have been acquired satisfies the designated allowable value, wherein the control section controls start of the subsequent process when the ranging value that satisfies the designated allowable value is acquired.