A golf aid for assisting a user in reading a green includes a user tracking system to determine the location of a user on a golf course, a heads up display, and a processor. The heads up display is configured to be worn on the user's head, and to display an image within a field of view of the user. The processor is in communication with the user tracking system and with the heads up display, and maintains a representation of a topology for each of a plurality of golf greens, receives an indication of the location of the user from the user tracking system, identifies one of the plurality of golf greens that is the closest to the user, and displays a representation of the topology within the field of view of the user via the heads up display.