This study investigates female participation in endurance sports in natural environments within the Pyrenean population. The primary objective is to assess the current level of engagement among women and analyze its evolution over time, with a particular focus on trail running. The research examines trends in outdoor sports participation before and after the COVID-19 pandemic, gender differences in endurance sports, and female involvement in competitions held in the region. To achieve these objectives, the study analyzes data from federation licenses and registrations in endurance sports events. Additionally, the study seeks to propose strategies for fostering gender equality in outdoor sports while ensuring sustainable growth. By presenting empirical data and actionable recommendations, this research aims to contribute to a more inclusive and balanced sporting landscape in the Pyrenees.