A method of generating geofences includes a) storing a plurality of stored locations; b) obtaining a first current location of a mobile device; c) identifying a plurality of nearest locations to the first current location; d) identifying an outermost location and determining an outer bound location, the outer bound location being located farther from the first current location than any of the plurality of nearest locations other than the outermost location; e) generating, for each nearest location except the outermost location, a local geofence around the nearest location; f) generating a triggering geofence around the first current location, the triggering geofence perimeter including at least the plurality of nearest locations other than the outermost location but not including the outer bound location; g) upon detecting that the mobile device has exited the triggering geofence iterating steps b) to f) for a new current location of the mobile device.