Mermaid Run San Francisco
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Event information
Mermaid Run San Francisco is the 17th Annual Women's Run San Francisco, held at Crissy Field in San Francisco, CA on Sunday, October 19, 2025. The event includes in-person races and a virtual option. Registration includes a race shirt, finisher medal and necklace by default; registrants may remove items to reduce the entry fee.
Distances and race details
- 5K - flat course along the waterfront.
- 10K - course enters the Presidio and passes Fort Point.
- Sirena10 Mile - course crosses the Golden Gate Bridge and returns on the bay side.
- Mermaid Dash (1.5 miles) - for ages 6 to 12.
- Virtual Run - packet mailing available after the in-person event for late registrants.
Mermaid Dash participants receive a medal, finisher necklace and post-race food; the dash entry does not include a race shirt. Youth 19 and under receive a 20% age discount applied during registration. Packet-mailing for virtual or late registrants is arranged after mid-September. Course maps are provided by the organizer for each distance. Registration fees vary by distance and period; options are listed during registration. Credits toward future Mermaid Series events are available if requested at least 10 days before the event date. Visit the organization's website for the most recent information.