You can find on this server pre-rendered routable maps for Garmin GPS Devices based on Openstreetmap data. I've decided to do this, since Cloudmade has discontinued to provide this service for free since December 2011.
Maps are rendered on a weekly basis. (Or at least should be, however if some resources are unavailable (e.g. servers where the OSM Planet file lives) the publication of new maps can be deferred)). You can find the maps for download following the link below (and skip reading the rest if you know what you are looking for). For others let me just give you a brief overview of what you can download here.
The directory strucure is geograpically divided. You can find following files in each directory:
gmapsupp.img: This is the pre-rendered map for use in the Garmin device. You need to copy this file to the Garmin folder of your connected GPS device or the memory card you are about to use.
osmmap.img: This is the base map file for using the map in Garmin Basecamp or Garmin Mapsource. For detailed instructions on how to register your maps in these products, please see the Openstreetmap Wiki.
osmmap.tdb: This is the database file for using the map in Garmin Basecamp or Garmin Mapsource. For detailed instructions on how to register your maps in these products, please see the Openstreetmap Wiki.
garmin-mapsource-installer.ini: This is a premade configuration file for the Garmin Mapsource Installer. Please note that this binary file is neither packaged in the zip file nor downloadable from here, please use the downloads provided by the OpenSteeMap SVN repository. The configuration file is also included in the provided zip package.
tiles.zip: A zip package for downloading all files but the gmapsupp.img. This is mainly for using the map with various programs (QLandkarte[GT], Mapshack, Mapsource, Basecamp, etc.).
*.sha256, *.sha1, *.md5: These are files contain the hashsum. They can be used to check the download for integrity.
The maps are provided as is. Usage is at users own risk.
If you have any questions regarding the pre-rendered maps, please feel free to contact: golf alfa romeo mike india november mike alfa papa sierra @ kilo yankee uniforn bravo uniform . delta echo. Or you can use the disqus commenting below.
Please understand that I cannot answer questions regarding data, map accuracy or technical details of the used tools.