Abstract: The subject matter of this specification can be implemented in, among other things, a computer-implemented method for sharing location information among a group of participants, the method including generating an invitation to share location information between computing devices of multiple potential participants. The invitation specifies a period of time during which the location information is shared. The method further includes receiving a response to the invitation from each of one or more of the potential participants. Each response includes an identifier for a confirmed participant. The method further includes receiving location information from a computing device of each of the confirmed participants during the period of time. The method further includes providing an interface configured to display, for the period of time, a location of the computing device of each confirmed participant.