A computer-implemented method for determining an estimated user location, implemented in a computing system programmed to perform the method includes receiving a map database associated with a geographic location including a plurality of map features, determining an estimated first user location within the geographic location, receiving a first plurality of physical perturbations from a plurality of physical sensors in response to physical perturbations of the computing system, determining an estimated second user location within the geographic location in response to the estimated first user location and to the first plurality of physical perturbations, determining a modified estimated second user location in response to the estimated second user location and to at least one map feature from the plurality of map features, and providing in the computer system, an indication of the modified estimated second user location with regards to the geographic location.