It all comes down to this. Stage 6 looms as a huge test, with a major climb to feature for the second consecutive day.
Riders will leave from Unley, just south of the city centre, and climb to Windy Point at Belair before heading into the Adelaide Hills.
An expanded loop through the region will feature towns including Mylor, Aldgate, Stirling, Uraidla, Crafers and Bridgewater. Expect drama on the slopes of Mt Lofty as the peloton ascends twice, then takes a third and final tilt at overall glory.