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This paper evaluates the efficacy of a distributed location mapping application running over a Service Overlay Network (SON) in a MANET wireless environment. In the application, an application-layer routing protocol facilitates data forwarding from mobile nodes to a Command Centre. The performance of the location mapping application is evaluated by measuring the deviation of the reported locations from the actual locations of nodes. The results of the simulations indicate that a MANET SON approach can support time-sensitive applications, such as location mapping of mobile nodes. While the accuracy of the location mapping is high in most scenarios, it is shown to be sensitive to selecting suitable system parameters. We identify key factors that impact the accuracy of the location mapping application: node speed, location update frequency, radio range and packet size. MANET; Service Overlay; Location Mapping; Group MobilityI.An application of wireless overlays in urban warfare scenarios is described in [4]. The objective of the application is the monitoring of a small geographical area. The implementations of two application scenario warfare situations with mobile overlay networks are also described in [5]. This paper explores performance issues and limitations associated with deploying a mobile geolocation mapping application in a MANET SON environment. The main contribution of this paper is a detailed study of factors that impact the performance of location mapping in a MANET SON environment. The study is performed using a simulation network model based on parameters extracted from a military operational scenario. While the results are encouraging, our study motivates further research on multiple SON over MANET. Current work establishes a base case to be compared with multiple SONs supporting different applications.The next section describes the location mapping application. Section III discusses application-layer routing. Section IV describes the experimental framework. Section V discusses results of the experiments.