The 75th edition of the Roy Webster Cross Channel Swim will take place on Labor Day morning in Hood River.  The swim originated in 1942 when local orchardist Roy Webster challenged himself to swim across the Columbia River.  Participants board the famous Sternwheeler paddleboat at the Port of Hood River and are ferried across the river to the Washington shore to jump in and swim back across.  Kate Schroder of the Hood River County Chamber of Commerce says they sold out the swim in June, and the over 500 participants are coming from all over the country.  Swimmers will jump in the river at 8 a.m. Monday.  A special swim lane lined with volunteers in sailboats, kayaks and paddleboards will be there to guide, encourage, and protect swimmers as they cross the channel.