This study aims to use kinematic compatibility exercises to develop some speed variables in the sprint step for 100m runners. The research community included short-distance players, all of whom are registered with the Egyptian Athletics Federation at Al-Rowad Club in the tenth of Ramadan. The research sample was chosen in a deliberate way from the research community who had the best times in the 100-meter sprint race, and their number (15) players were divided into (3) players as an exploratory sample, and (12) players as a basic sample.. Some physical measurements were taken and the study was subject to To analyze the sprint step in the 100m sprint and define the values of the variables (average pivot time - average flight time - step length - average race time) for the tribal measurement, then apply the proposed program for a period of (8) weeks. Results on: The use of harmonic exercises led to an improvement in the physical and speed variables of the sprint step, which include (average pivot time, average stride length, average flight time, race time) and the presence of clear improvement ratios in the physical variables, which led to an improvement in the values of some speed variables for the sprint's stride.