Cycling enthusiasts will put their skills to the test from Norwood to Campbelltown on the Bupa Challenge Tour just hours before the professionals tackle the stage.
Riders will take on Checker Hill for the Subaru King of the Mountain before looping around Birdwood, Springton and Mt Torrens before finishing in Campbelltown.
Recreational cyclists and fans of all ages will cheer on the cyclists along Maryvale Road at the stage finish.
Subaru King of the Mountain: Checker Hill Road, Kersbrook
iiNet Sprint #1: Shannon Street, Birdwood (near August Street)
iiNet Sprint #2: Main Street, Mt Pleasant (near Barossa Council Office)
Powerade Hydration Station: Mt Pleasant to Keyneton Road, Springton (near Herbig Tree)