2017 USMS OW championships

Hey Peeps - who out there has done any of these races in the past? Any tips? Anything you love/didn't like about these races and/or locations? 2017 U.S. Masters Swimming Open Water National Championships 6-9 Mile OW Nationals (7 miles) Swim Around Lido Key, Sarasota, Florida, April 22, 2017 9+ Mile OW Nationals (10 miles) Chattanooga, Tennessee, June 3, 2017 1-3 Mile OW Nationals (2.4 miles) Chattanooga, Tennessee, June 4, 2017 2-Mile Cable OW Nationals Foster Lake, Oregon, June 24, 2017 3-6 Mile OW Nationals (5K) Elk Lake, Oregon, July 30, 2017 1-Mile OW Nationals Angle Lake, Washington, September 23, 2017