Belair National Park is a worth-it destination run! Located just 25 minutes southeast of Adelaide and easily accessible by train, South Australia’s oldest national park features many km of trails set in beautiful bushland. There are scenic trails for all levels, with terrain including open grassland, native woodlands, lakes, and waterfalls (in winter). There are also numerous sports & recreation facilities.
There’s a huge variety of options for running. This page has excellent recommendations for suggested loops, using the Australian Walking Track Grading System (grades 2-4). Use this corresponding trail map.