Cupid’s Undie Run is a super fun, crazy 1-mile charity race where runners wear ONLY UNDERWEAR. Seattle’s edition takes place this Saturday at Westlake at noon! Cupid’s Undie Run focuses on the amazing mission to raise awareness for NF (Neurofibromatosis) and provide funds to The Children’s Tumor Foundation. The event is held in a total of 39 cities nationally and has currently raised over $2 million. Unlike other cities who hosted the run earlier this month with freezing temperatures like DC and Detroit, Saturday’s forecast calls for a party cloudy day and a high of 52 here in Seattle.