The Cupid's Undie Run will raise funds for the Children's Tumor Foundation in cities across the nation. Here's what you need to know for Chicago.

LOS ANGELES (KABC) -- Authorities dispersed a rowdy crowd of students in their underwear at UCLA during the annual "Undie Run" early Thursday morning. Authorities responded to the scene around 1 a.m.

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On Saturday, metro Detroiters stripped down to their underwear to for Cupid’s Undie Run, a “mile(ish) run” that raises funds and awareness of the genetic disorder neurofibromatosis. Participants ...

Exhibitionist runners from all over town stripped down and raced for a good cause on the Sabbath morning of Sept. 19 ... Exhibitionist runners from all over town stripped down and raced for a good ...

A small private university faces a large bill from the City of Orange for police costs incurred in preventing students from climbing the town square's fountain during the school's annual "Undie Run." ...

After two years of streaking through the nation's capital, Cupid's Undie Run is expanding to Seattle, taking to the exposure-friendly streets of Fremont this Saturday. Approximately 3,000 runners clad ...