Public or Private Transport options in regional areas are not as numerous or frequent as those in the major cities (outside of school bus services). Nelson is not serviced by any private or public bus transport (apart from the school bus), but bus, plane and coach / rail (Portland to Melbourne) services to Adelaide and Melbourne can be accessed by driving to either Mt Gambier or Portland. This often requires a bit more planning and juggling if you intend to use these services! Here are some links to the various options in and around the Glenelg Shire.
V-Line service – Mt Gambier to Melboure via Geelong
Premier Coach Service – Mt Gambier / Adelaide