Henley Royal Regatta July 1, 2017 by National Rowing Foundation Loading Map.... Henley-on-Thames, UKHenley-on-Thames, UK - Henley-on-ThamesEvents 51.5371749 -0.9042197999999644 Date/Time Date(s) - 07/01/2017 - 07/02/201712:00 am Location Henley-on-Thames, UK