A stent is configured so that the length during expansion is unlikely reduced and has satisfactory flexibility so as to be able to pass through a biological lumen. In the stent, the number of mountains in a first annular portion and the number of mountains in a second annular portion between the first link portions adjacent to each other in a circumferential direction differ from each other. The first link portions are positioned on a first line parallel to an axial direction and the second link portions are positioned on a second line parallel to the axial direction, in a state where a plurality of annular reference bodies are repeatedly arranged in the axial direction.
