Cupid's Undie Run organizers said more than 550 people substituted boxers and bras for normal winter running gear to job about a mile around Ford Field Saturday, raising about $80,000 for the Children's Tumor Foundation, The Detroit News reported.
Detroit organizers set a $50,000 fundraising goal for the Motor City's first-ever event.
"We are the top fundraiser for all 14 new cities that were added to the event this year," race director John Marcicky said. "It's really showing how we put the hilarity in charity."
The event started in Washington D.C. in 2010.
Danielle Dettmer of Romeo and three friends raised $770 for the charity by running in the brisk 27 degrees F.
"It's definitely weird. And yeah, it's a little cold out," Dettmer told the News. "It's a cool atmosphere. Everybody's having a good time. It's cool that everyone could come out here together to do this."
Dettmer's friend, Gerber Moore, added, "And not get in trouble for indecent exposure."