This study aimed to investigate the trends of finishers in the São Silvestre race in Brazil, taking into account sex, age, and performance levels. A total of 31 775 runners (women, n = 13 847; men, n = 17 928), aged (45.2 ± 16.8) years, finishers in the São Silvestre race between 2007 and 2021, were considered in the present analysis. Data (event year, date of birth, sex, and race times) were downloaded from the official race website. The man-Whitney U test, Spearman correlation, and robust regression model were computed. Participation increased over time for both sexes. Regarding age groups, "31-40 years" (women) and "> 60 years" (men) were those with the highest number of finishers. We found a decrease in performance across the years (β = 2.45; p < 0.005), as well as significant differences in race times for both sexes (U = 42.844; p < 0.001), with men presenting better performances than women. Over time, it was observed an increase in the performance gap between the sexes, but in general, the performance decreased (β = 1.76; p < 0.001). Stakeholders should consider improving the strategies to improve women and young people's participation in running events.
Keywords: Endurance; Performance; Sex differences.
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