The transnational trail High Scardus Trail (HST) consists of 16 main sequences or so-called main trails, which are located in the high-mountain zones of the border region of Albania, Kosovo, and Macedonia. It starts from the Ljuboten peak on Shar Mountain and finishes on the Galicica Mountain on the shores of Lake Prespa.
The main trails/sequences are named according to the nomenclature system used for the tourist product High Scardus Trail, where the acronym HST (High Scardus Trail) is used followed by enumeration indicating the order of the trail. The numeric markings start from the north where the High Scardus Trail -1 is located, which is displayed on maps as ‘HST 1’. Moving south, the numerical value for each of the sequences increases, so the last main path is ‘HST 16’.
The main trails, which are part of the continuous transnational route, are marked on the map with a thick white and red line.
The secondary/auxiliary trails are divided into two categories depending on their function. Most of them are entry or exit trails to and from the main trail, and some of them are alternative trails that facilitate movement on an easier terrain at a lower altitude, which is especially important in bad weather conditions in high mountain areas.
The nomenclature of the auxiliary trails is similar to the nomenclature of the main trails. It contains the acronym HST (High Scardus Trail) and the numerical designation is two-digit. By taking the example of High Scardus Trail – HST 15/1, the first digit (15) refers to the main sequence of the trail (HST 15) to which the auxillary trail is connected, and the second digit (/1) indicates the order of the secondary trail within the main trail. The secondary trails are marked on the map with a thin white and red line.
With the existence of the secondary trails, the creation of different tours in terms of hike duration and difficulty is possible. In this way, the main trail can be accessed or exited from at several points throughout its length. Thus, the secondary trail has not only a touristic significance i.e. giving the opportunity to mix and match different tours and products in terms of different lengths and difficulty but it also has a high security significance, since the secondary lines are connectors onto the main trail with nearby populated places where rescue aid or logistics can be obtained if necessary.