Coming November 10, 2012. We’re all mermaids. But sometimes we do like to come on land, and the Mermaid Run in San Francisco is coming up just for us to do that. This 5K and 10K run is a great event for women to get out there and enjoy a flat course through San Francisco’s gorgeous Marina Green and Crissy Field. There’s even a mini-mermaid 1.5 mile run for the girls ages 6-12. So, shake of those fins and test out these new… what do you call them? … legs.