The Purpose of this study was to examine the effect of 10 weeks 40m repeated sprint training program that does not involve strength training on sprinting speed and repeated sprint speed on young elite soccer players. Twenty young well-trained elite males' soccer players aged (± SD) (16.4 ± 0.9 years), body mass (67.2 ± 9.1 kg) and stature (176.3 ± 7.4 cm) volunteered to participate in this study. All participants were tested on 40m running speed, 10x40m repeated sprint speed, 20m acceleration speed, 20m top speed, Counter movement jump (CMJ), and aerobic endurance (beep-test). Participants were divided into training group (TG) (n=10) and control group (CG) (n=10). The study took part in the pre-competition phase of the training program for the participants and ended 13 weeks before the start of the season, the period of the pre-competition period was 26 weeks.The TG followed a Periodized repeated sprint training program once a week. The training program consisted of running 40m with different intensities and duration from week to week. Within group results indicate that TG had a statistically marked improvement in their performance from pre-to post-test in 40m maximum sprint (-0.06s), 10x40m repeated sprint speed (-0.12s), 20-40m top speed (-0.05s) and CMJ (2.7cm). The CG showed only a statistically notable improvement from pre-to post-test in 10x40m repeated sprint speed (-0.06s). Between groups differences showed a statistically marked improvement for the Running Head: Repeated Sprint Training 2 TG over the CG in 10x40m repeated sprint speed (-0.07s) and 20-40m top speed (-0.05s) but the effect of the improvement was moderate. The results further indicate that a weekly training with repeated sprint gave a moderate but not statistically marked improvement in 40m sprinting, CMJ and beep-test. The results of this study indicate that the repeated sprint program had a positive effect on several of the parameters tested. However, due to the fact that the sample size in this study is 20 participants, the results are valid only for those who took part in this study. Therefore, we advice to use repeated sprint training similar to the one in this study only in periods where the players have no speed training included in their program. Furthermore, the participants in this study should probably trained strength but in this case benefits were observed even without strength training is most likely to be due to training specificity.