Physical training in cross-country skiing is a particularly important component, as motor skills must be developed with great care at junior age to be able to reach high performances in national and international competitions. Their development is scheduled according to the content of the lessons, the existing sports materials, the seasonal conditions, the students' motor ability at a certain stage. Cross-country skiing is a sport whose technique is not very complex. That is why the difference at competitive level is mainly due to the motor qualities level of development and especially of the qualities that this sport requires, namely resistance or endurance in conditions of force and balance keeping. The training program we propose in the paper was selected and rationalized following the pedagogical observation activity on several junior students of the same level. The purpose of this research is to experimentally determine the level of development of motor skills after taking up a program of initiation in the practice of cross-country skiing as sport discipline. Starting from the premise that the level of physical development (biological particularities) and motor capacity (level of motor capacities and skills and/or motor skills - as volume and execution) have a fairly large distribution line, it is assumed as follows. “… approaching the development of motor qualities using modern methods and specific cross-country skiing means can lead to an increase in motor performance indexes and, implicitly, to increased sports performance.” To the earlier ones, one can add the argument that these qualities (such as speed, force, strength or skill) can be emphasized only in relation to the movement, to the motor act, being parameters of the motor act.The experimental research took place between 2015 and 2016, respectively the second semester of education. It was conducted in mixed fashion, 3 weeks in October and 3 weeks in March. The group investigated: it was made up of children aged 13-14 who practice crosscountry skiing from the sports training center CSS (School Sports Club) Braşovia. A set of tests were used to perform the experiment once at the beginning of the experiment and the second time at the end of this experiment. The experimental group's reaction to the specific and non-specific sets of exercises in cross-country skiing, used in the lesson, was monitored. The results were recorded in tables for better visualization and for better accessible when the graphical is being drawn. As in the case of the first test, the final tests took place over a three-day period to avoid over-exhaustion of the students, otherwise the results may not be conclusive. The processing and interpretation of the data resulted from the experiment was performed by the statisticalmathematical method. The statistical indicators that were used in the statistical processing and interpretation of the results were: arithmetic mean, standard deviation and coefficient of variability, presented in comparative graphs. In conclusion, if work is organized, and performed along well-defined (mixed) periods and with modern means, the motor qualities specific to skiing are improved and the basic technique is improved as well. We suggest that cross-country skiing trainings should be mixed for better efficiency in improving motor skills and technical procedures for non-specific and specific work.