We wanted to make sure you received information about the Rock and Roll Portland Half Marathon taking place Sunday May 18TH in your area. The race will result in road closures from approximately 7:00 a.m. to 12 p.m. Attached is a brochure that should answer most of your questions. If you have any further questions please call  1-800-311-1255.
See this link for the map POR_14_rcb of the route.