The goal of this research was to perform a kinematic analysis of the motor structure of running children of early and preschool age in order to determine possible deviations from the ideal structure of movement and patterns of behavior during running when solving defined tasks. 18 children between the ages of 2.5 and 6.8 from the kindergarten "Turnić" in Rijeka participated in the research. The children who participated in the research were filmed performing 3 motor running tasks (forward, backward and slalom) and an analysis was performed based on this. The method of content analysis was used to process the video, and the basic descriptive parameters were calculated. Student's t-test for independent samples was used to determine differences among variables. The kinematic analysis of the research was carried out in the Kinove program and the following variables were measured: length and duration of steps, number of steps, total duration of the task, knee angle, hip angle and ankle angle. The results indicate an increased body mass index, which negatively affects the realization of children's motor potential when running. Children with a higher body mass index needed more time to complete the task. Also, the age variable indicates differences in the speed of performing motor tasks, so on average younger children took longer to complete the task than older children. Some of the patterns of children's behavior when performing the motor tasks of running were also determined. The research highlights the importance of implementing specific interventions and adapted physical activities to encourage motor skills and overall health in children during this key stage of development. By recognizing the different needs of each child and offering appropriate instruction, educators and health professionals can promote more holistic motor development. This, in turn, establishes the basis for sustained enthusiasm for physical activity and healthy habits throughout a child's life.