The purpose of this study is to determine the effectiveness of special training means for young 400-meter hurdles (15-16 year-old girls) and their distribution in the annual training cycle at the stage of in-depth training. The authors investigated the effectiveness of the use of motor tasks simulating the functional state of athletes in the training of young hurdlers. The data obtained during the study convincingly indicate the advantage of the method proposed by the authors to improve the special physical fitness of 16-year-old runners, this is especially noticeable in the results shown at the end of the year. At the same time, at the initial segments of the distance (the first 5 barriers), the results are approximately the same, and, starting from the second half, there is a clear superiority of the participants of the experimental group over the runners of the control group. As a result of research, the authors revealed that the use of special physical training for young runners at 400 meters with barriers with a gradual increase in motor potential in the required modes of competitive activity proceeds against the background of the phased introduction into the program of new, more powerful means with a simultaneous increase in their volumes consistent use in macrocycles of various exercises of uniform preferential orienta