The aim of this essay is giving a general overview about sport cycling from a biomechanical perspective.Although it is Display Devices necessary to say that the extraordinary dimension of the huge scientific production related to the topic makes difficult to deal this area in just one essay.Due to the variety of contents included into cycling biomechanics, contents in this essay have been restricted into three units: the first, focusing the study of forces opposed to displacement, and specially to the analysis of aerodynamic resistances; the second one related to the study of propulsive forces, specially those applied against the pedal, and the third one, focusing the most relevant aspects about the mechanical efficiency of displacement in cycling.KEY Board Game Mattel New/Sealed WORDS: aerodynamic resistance, mechanical efficiency, cycling.