15. Walk part (or all if you dare!) of the Heysen Trail
The world-renowned Heysen Trail stretches 1,200 kilometres from Cape Jervis on the Fleurieu Peninsula to Parachilna Gorge in the Flinders Ranges. While not everyone has the time to walk the entire trail, why not hit the trail for a few hours or a few days? The Heysen Trail passes through numerous SA national parks and is in easy reach for most South Australians.