Henley Royal Regatta June 28, 2017 by National Rowing Foundation Loading Map.... Henley-on-Thames, UKHenley-on-Thames, UK - Henley-on-ThamesEvents 51.535764 -0.9028940000000603 Date/Time Date(s) - 06/28/2017 - 06/30/201712:00 am Location Henley-on-Thames, UK