The summer of road cycling is about to kick off here in Victoria and South Australia, so here's a quick pre-cooked Garmin map file of all the areas the racing covers this summer. I've kept this small for Garmin Edge 520 users with limited device space. These maps are sourced from OpenStreetMap (Routable Bicycle Openfietsmap Lite).
Size: 63MB compressed. 84MB map file.
Instructions: Just unzip and overwrite your gmapbmap.img file in /Garmin. *Backup existing map file if required.
If you're using a Garmin unit other than a 520 you can follow these instructions by DCRainmaker to install/configure/etc your own maps, or to rename this map file to gmapsupp.img. Full details over on DCRainmaker.
These maps should cover the following 2015/16 races here in Australia:
Melbourne - Bay Crits.
Ballarat - Cycling Australia National Championships
Victoria - Herald Sun Tour
Geelong - Cadel's Race
Adelaide - Tour Down Under
Misc - Victorian alps and Adelaide hills!