Very flexible tool which allows you to convert just about any source of free georeferenced map data (GeoTIFF, MrSID, etc) into Garmin KMZ files.

G-Raster: Free tool published by Leszek Pawlowicz of Free Geography Tools.There are a growing number of tools which can be used to create 'Garmin KMZ' files from freely available map data. Using Google Earth is only one way to create a Garmin Custom Map file. Example hereĬM5.) What other tools can I use to make Garmin Custom Maps?

MAPC2MAPC (see below) will convert these to Garmin Custom Maps very quickly. In the US, the Libre Map Project has a library of maps that can be downloaded. GpsFileDepot is allowing users to post KMZ files on that site.ĬM4.) What free sources of map data are there to help me create Garmin Custom Maps? Garmin has a forum where users are sharing KMZ files which work with Garmin GPSs.

Save the ground overlay as a KMZ file to your Garmin GPS.ĬM3.) Are there libraries of precalibrated Garmin Custom Maps that I can simply download?.

Calibrate the image using Google Earth using Google Earth's ground overlay feature.

Find a JPEG image of the map you would like use on your GPS.

The steps involved to creating a Custom Map are: Garmin's instructions detail a simple 5-step process for creating a Garmin Custom Map.

As an example, Garmin Custom Maps makes it possible to view aerial imagery on the GPS which is similar to what can be seen in Google Earth.ĬM2.) How do I load Garmin Custom Maps onto my Garmin Oregon, Dakota or Colorado? Custom Maps can be viewed on the map page just like any other Garmin map such as Topo or City Navigator. Garmin Custom Maps allow users of the Garmin Oregon, Colorado and Dakota to view maps created from JPEG digital images on their GPS device.

Garmin custom maps size limit