Make an app
Make your own multiple map applications which affect all mapping capabilities on Google map. Select an area and mark complete area with all existing locations. Add a boundary to the selected area to differentiate from other regions.
Pack an app
Packing a map as a new application with own keys generated by using Gmail or g+ account which stores all your application data in the form of a android file.
Distribute an app
File can also be able to distribute to android market(Google play store), where the end user can upload a file and use.