Mermaid Run San Francisco

10 Mile: The only distance to cross the GOLDEN GATE BRIDGE! Beautiful views of the Pacific Ocean, the Bay and the Bridge. 10K: The 10K course goes up and into the Presidio and out to the Pacific Ocean overlook before heading back to Crissy Field. 5K: Flat, yes totally flat.. Enjoy the views without the hills! ** VIRTUAL ** Get the swag and run your favorite distance from home. You have one month to complete your favorite race distance, or challenge yourself to the Trifecta and do them all. ​ RACE UPDATES Updates are sent the week of the event.