It was once called the Adriatic Highway and connected the northern Adriatic with Dalmatia. Today is called Istarsko Proljeće - Istrian Spring as the entire route passes through Istria.
In the last couple of years the race has consisted of four sections: a prologue and three stages. While the prologue consists of several kilometres in which sprinters come to the fore with the aim of winning the first leaders T-shirt, other stages offer a number of curiosities. Organisers do not want to exclude anyone: on this race both mountain riders and sprinters come out as well as those who like escapes. Over the four days the race goes around Istria, mainly through its interior, although it does not bypass the coast either.
Professional and continental category teams are usually the main participants in the Istrian Spring race among which future champions and winners of stages on the Tour de France, the Giro d'Italia and the Vuelta a España can often be found hiding.