In terms of recreational cycling in South Australia, the state has some great assets

1. The Riesling Rail Trail in the Clare Valley, a 30+km off road packed gravel trail over very gradual gradients, that passes wineries and gourmet food outlets in the Clare Valley.  Only 1 1/2 hours from Adelaide, it's a fun cycling getaway and the basis for our 2 day/2 night Clare Valley cycling tour
2. The Barossa Trail which includes the Jack Bobridge Track,  runs from Gawler to Tanunda through Nuriootpa and on to Angaston in the Barossa, passing world famous wineries and gourmet outlets on the way.  The path is a high quality 40kms paved track, that makes for a fun day or multi day cycling experience. We include this trail on our 6 day Tour de South Australia Vineyards or enjoy our Barossa + Clare self guided combo tour.
3. The Amy Gillett Rail Trail is a wonderful 16kms cruise through the stunning scenery of the Adelaide Hills.  Sample the delights of local chocolate making, cheese making and of course world class wine and cellar doors.  Despite being in "the hills", like most rail trails the riding is pretty much flat.  All within close reach of Hahndorf and 30 mins drive to Adelaide city.
4. And finally the Shiraz Trail in McLaren Vale, a scenic and paved off road path that cuts a route through some of the most famous South Australian wineries, complete with views over the southern ocean, finishing with welcome dip on a hot day. Only 45 mins from Adelaide it's the prefect day trip or jump on our Tour de South Australia vineyards trip to experience this great trail.