Introduction: The Relative Age Effect (RAE) is a concept related to the possible advantage that older athletes would have over younger ones within the same category. For a better understanding of how the RAE behaves in Athletics, more detailed analyzes with clippings within the groups of evidence become necessary. Objective: To analyze the Effect of Relative Age on speed and jumping events in Athletics in general and segmented between the most and least practiced tests. Methods: The 50 best results in the Brazilian Ranking of the CBAt (Confederação Brasileira de Atletismo) of the sprint and jumping events in Athletics of the Under-16 (female and male) and Under-18 (female and male) categories were extracted from the domain site CBAT public for data analysis. The data were analyzed in their total sample and divided by category. Subsequently, the sample was divided into more practiced tests (shallow speed tests and horizontal jumps) and less practiced tests (hurdles and vertical jumps). Finally, an analysis of the 10 best results in the female category in the horizontal and vertical jump tests was carried out. Results: In the sample of the speed tests group, in males the effect of the relative age was significant for the total sample, Sub-16 and Sub-18, while in the female sex there was no significant effect of the relative age. In the jumping competition group, the relative age effect was pointed out for both sexes, however, when we segregated the sample by age category (U-16 and U-18) the relative age effect was maintained for males, not appearing for female. By segregating the sample into subgroups in the sprint events, an effect of relative age was found in the total sample of both sexes for the shallow events and only for the male in the hurdles events, and when considering the Under-16 and Under-18 categories , there was an effect of relative age for the male sample in both categories and divisions of events, while for females, an effect of relative age was indicated only in the Under-18 category in the shallow events. In the sample of jumping events divided into subgroups, an effect of the relative age for the male sex in the vertical and horizontal jumps in the total sample and when considered by age category (U-16 and U-18) was pointed out. In the group of events of jumps, when extracted the 10 best results of the feminine category, it was verified EIR in the group of tests of horizontal jumps. Conclusion: There is a Relative Age Effect in the under-16 and under-18 sprint and jumping events in Brazilian Athletics in males. However, when segmenting events with a greater number of competitors between these two groups of events, positive results are also verified in females in the under-18 category in the speed events and among the holders of the 10 best results in the horizontal jump events.