This was the second year of "Cupid's Undie Run" in Chicago.
The runners took off on North Clark Street and ran one and a half miles around Wrigleyville to raise money for the Children's Tumor Foundation.
Runners raised more than $156,000 and they warmed up afterward at John Barleycorn. But the Chicagoans weren't the only runners baring their skin for a good cause. A scantily clad New York crowd ran for one mile along the Hudson River on Manhattan's West Side.
That charity event brought out hundreds of runners to raise money for the Children's Tumor Foundation. Last year, they raised more than $1.3 million.
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