The annual Santa Speedo Run, 2006

This past Saturday, Dec. 16th, the annual Santa Speedo Run -- a short, but mostly naked marathon, of sorts -- took place, with the event starting from the bar Lir on Boylston Street.

Don't worry, though, it's not as hedonistic as you might imagine. Each guy and girl running down the street in their skimpies is doing it all for charity.

(Text and photos by James Duffy, Boston.com Staff)
This past Saturday, Dec. 16th, the annual Santa Speedo Run -- a short, but mostly naked marathon, of sorts -- took place, with the event starting from the bar Lir on Boylston Street. Don't worry, though, it's not as hedonistic as you might imagine. Each guy and girl running down the street in their skimpies is doing it all for charity.