The swim is in the Willamette River, which courses through Portland from south to north. Swimmers will start from the docks at RiverPlace Marina and finish on the swimming beach just to the south of the Hawthorne Bridge. dragon boats, kayakers, and Coast Guard will provide support and directional guidance.
The average September 1 water temperature for the past five years has been 69.4°F, according to USGS. In 2007, water temperature was 71°F.



