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Djamila Grossman | The Salt Lake Tribune The Utah Undie Run is a rally to encourage people in Utah to lighten up. Hundreds of p Djamila Grossman | The Salt Lake Tribune The Utah Undie Run is a rally to encourage people in Utah to lighten up. Two women wai Kim Raff | The Salt Lake Tribune Coleman Riebe waits for the beginning of the 5k Utah Undie Run in Salt Lake City, Utah on Septemb Kim Raff | The Salt Lake Tribune People run down State Street during the 5k Utah Undie Run in Salt Lake City, Utah on September 9, Kim Raff | The Salt Lake Tribune People run down State Street during the 5k Utah Undie Run in Salt Lake City, Utah on September 9, Kim Raff | The Salt Lake Tribune Karlie Shupe runs down State Street during the 5k Utah Undie Run in Salt Lake City, Utah on Septe Kim Raff | The Salt Lake Tribune James Lyons stands on top of the fountain at Library Square and takes pictures of the crowd gathe Kim Raff | The Salt Lake Tribune People run down State Street during the 5k Utah Undie Run in Salt Lake City, Utah on September 9, Kim Raff | The Salt Lake Tribune People gather at library square for the 5k Utah Undie Run in Salt Lake City, Utah on September 9, Kim Raff | The Salt Lake Tribune Corbin Celotto encourages people in the 5k Utah Undie Run in Salt Lake City, Utah on September 9, Kim Raff | The Salt Lake Tribune People run down 400 South at the start of the 5k Utah Undie Run in Salt Lake City, Utah on Septe Kim Raff | The Salt Lake Tribune Wearing only underwear people run down 400 South at the start of the 5k Utah Undie Run in Salt La Kim Raff | The Salt Lake Tribune People gather in front of the capital building during the 5k Utah Undie Run in Salt Lake City, Ut Djamila Grossman | The Salt Lake Tribune The Utah Undie Run is a rally to encourage people in Utah to lighten up. People stand Kim Raff | The Salt Lake Tribune People run down State Street during the 5k Utah Undie Run in Salt Lake City, Utah on September