Half Marathon 2025 San Diego Registration. Saturday, march 8th, 2025 5k, 10k, half marathon, mermaid dash, virtual run women's 5k, 10k, half marathon and virtual run ideal course for both walkers and runners! With five miles of waterfront, four historic.

Saturday, march 8th, 2025 5k, 10k, half marathon, mermaid dash, virtual run women’s 5k, 10k, half marathon and virtual run ideal course for both walkers and runners! Registration for the kaiser permanente thrive san diego half marathon & 5k is now open.