The Mawson Trail is a signposted mountain bike trail in South Australia that can easily be cycled with a touring bike. Other than the Munda Biddi Trail you will mostly pass through agricultural areas and is therefore easier.
The Mawson Trail leads some 900km from Blinman iin the Flinders Ranges to Adelaide.
The trail is perfectly signposted. I cycled it without the official maps which was no problem. A GPS can be useful.
You pass a villige every day where there are camp sites. The trail often passes through agricultural areas where there are not many options to camp.
You have shopping options almost daily. Only north of Hawker there will be less.
Official website: http://www.southaustraliantrails.com/trails/mawson-trail/