Henley Royal Regatta Henley Royal Regatta Henley Royal Regatta (or Henley Regatta, its original name pre-dating Royal patronage) is a rowing event held annually on the River Thames by the town of Henley-on-Thames, England. It was established on 26 March 1839. It differs from the three other regattas rowed over approximately the same course, Henley Women's Regatta, Henley Masters Regatta and Henley Town and Visitors' Regatta, each of which is an entirely separate event. The regatta lasts for five days (Wednesday to Sunday) ending on the first weekend in July. Races are head-to-head knock out competitions, raced over a course of 1 mile,
Henley Royal Regatta was a winding, shallow backwater and it would clearly not be possible to lay a course of the full Henley distance without significant alteration to the bank, the island and the riverbed. For the 1923 regatta, the Stewards therefore decided to try a shorter experimental straight course which started at the top of the island. This produced 53.2% wins on Bucks and 46.8% on Berks, deemed enough of an improvement on the New Course to justify a permanent change. The consent of the landowners of the Berkshire bank and Temple island (Lord Hambleden and W.D. Mackenzie respectively) was obtained to