Introduction and Hypothesis <p>Stress urinary incontinence (SUI) is common among high-impact athletes and can be experienced with high-impact activity during childhood. We sought to identify whether leakage experienced during gymnastics training before age 18 impacts future SUI.</p> Methods <p>An observational cohort study was performed. Current and former competitive gymnasts 18&#xa0;years or older were queried by a survey disseminated via Facebook starting 1 September through November 2024. The survey was composed of a nonvalidated portion that inquired regarding the conditions under which participants experienced incontinence before and after age 18. The validated Urogenital Distress Inventory (UDI-6) assessed current voiding symptoms. Chi-squared evaluated significance between childhood and adult SUI. Univariate and multivariate linear regression identified patient characteristics associated with increasing UDI-6 scores.</p> Results <p>A total of 146 people responded to the survey, with 126 complete responses. Participants ranged from 18 to 65&#xa0;years of age. Among the 64 (50.8%) who experienced SUI with gymnastics under 18&#xa0;years, 54 (84.4%) experienced SUI as adults. In contrast, 32 (51.6%) of participants who did not experience SUI under 18&#xa0;years experienced SUI as adults (<i>p</i> &lt; 0.001). Multivariate analysis revealed that SUI with gymnastics training under age 18 was associated with increasing weighted UDI-6 scaled score (<i>p</i> &lt; 0.04), particularly in the stress domain (<i>p</i> &lt; 0.001). BMI was also associated with increasing UDI-6 scaled score (<i>p</i> = 0.02).</p> Conclusions <p>High-impact athletes who experience SUI with training under age 18 are more likely to experience SUI as adults. Earlier recognition of SUI during high-impact activities could ultimately improve patients’ long-term quality of life.</p>