The given article features localizers of the prosecutive-comparative case in the Khakass language. The prosecutive-comparative case in the Khakass language, as well as in some other Turkic languages of Southern Siberia, has the meaning of lengthwise direction, a line. The given value is not expressed by any specialized grammatical form for the majority of Turkic languages, which makes its study important. The localizer is an important component of the analysis when functions and semantics of spatial cases are described. The article is aimed at revealing the structure of the localizers expressed by names or a combination of names which are used in the prosecutive-comparative case in the Khakass language. The analysis of the structure of such localizers shows that the space is characterized, basically, by two types: the extended space having some extent ("natural" space: ойым чир ‘a valley’, суғ ‘а river’, хас ‘coast’ and "artificial" space: орам ‘street’, чол ‘road, a way, a line’, тимiр чол ‘the railway’, саарсых азах чол ‘a footpath’, etc.) and a big space, with an extensive area (тайға ‘a taiga’, талай ‘ the sea ’, чазы ‘steppe’, etc.). Thus, the prosecutive-comparative case in the Khakass language expresses relations not only as lines or lengthwise directions, but also as a general place of movement.