Castro denizens stripped down to their running shoes and their most festive undies for the 2016 edition of the Santa Skivvies Run, which took place yesterday morning in the neighborhood.
A fundraiser for the San Francisco AIDS Foundation, the one-mile fun run raised tens of thousands of dollars for free HIV testing, prevention, and support services, and brought out a variety of creative skivvies and other costumes. Here's a look at what went down this year.