San Diego Half Marathon 2025. Enjoy a beautiful course and water views as you wind through mission. The half marathon course features five miles of waterfront, four historic communities, three iconic san diego parks, two miles through downtown san diego, to one epic finish line in san diego’s.

The flat and fast course features beautiful bay views along the running path at mission bay. The half marathon course features five miles of waterfront, four historic communities, three iconic san diego parks, two miles through downtown san diego, to one epic finish line in san diego’s.