For ten days, locals welcome the arrival of a 200-strong peloton of elite international athletes to compete in a three-staged road race and criterium throughout three key regions.
It is a sport of grit and grace in equal measure.
Known for the diversity of track, technicality, and tenure, the Santos TDU is also synonymous with the backdrop of lolling hills, rugged coastlines and vineyards.
Of course, these surroundings incite peripheral activities and a cycling culture.
Adelaide Hills and Barossa regions become alive with an almost folk-festival of spectators who converge from across the globe – a mix of all accents and languages as they drink and eat in the myriad of cellar doors.
As the peloton weaves up the Fleurieu Peninsula, south coast cafes become scenic vantage points to watch the race, including the iconic steep climb up Willunga Hill.
And in more recent years, the Adelaide city-centre is host to a younger cycling community with an appetite for the fast-paced criterium and entertainment the Cycling Village offers.
If you’re unfamiliar with the event – you’re forgiven. Next to the (rightfully) boastful flamboyance of festivals and sporting events like the Clipsal 500 or Cricket test matches, it’s a mild-mannered yet utterly thrilling celebration of cycling, strategy and scenes.