Mermaid Half Marathon San Diego

Mermaid Half Marathon San Diego is part of the Mermaid Series, a women-focused running and multi-sport event. The San Diego edition offers 5K, 10K, Half Marathon, Youth, and Virtual options. Slated for March 14, 2026, the race takes place in sunny San Diego with a flat course that blends road and paved running paths around Mission Bay.

Runners can soak in waterfront views, a relaxed, welcoming atmosphere, and the opportunity to finish with fellow Mermaid participants. A virtual option is available, reinforcing the series’ inclusive spirit and focus on encouraging women to cross the finish line. Spectators and supporters are welcome. Visit the organization's website for the most recent information.