BOSTON (WHDH) -- Santa like you've never seen him!

Some skimpy Santa Clauses and Mrs. Clauses raced down Boylston Street in their skivvies for the 13th annual Santa Speedo Run.

More than 500 people braved the dreary day in next to nothing for the mile run, but it was all for a good cause.

The money raised supports Boston’s Play Ball! Foundation to bring great after school activities to local kids.