Great Springs Trail Race - San Marcos

The Great Springs Trail Race in San Marcos is an exciting trail running event set in the scenic Purgatory Creek Natural Area. Scheduled for October 11, 2025, participants can choose from various distances, including a 10K, half marathon (13.1 miles), and a full marathon (26.2 miles), along with a youth 1-mile race for children aged 12 and under. The race features a diverse course with single-track trails, rolling hills, and rocky sections, making it suitable for both beginners and experienced runners.

This event supports the Great Springs Project, emphasizing the importance of the Edwards Aquifer for sustainable water resources. Visit the organization's website for the most recent information.