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,
Marlow Regatta attract a larger number of international competitors. Marlow Regatta is one of the top events in the British rowing calendar and attracts top crews from schools, clubs and universities from around the UK, Europe and the USA. The regatta takes place two weeks prior to Henley Royal Regatta and for some competitors this will be the last chance to pre-qualify for Henley Royal. Racing takes place on Saturday between 08:30 and 19:00, with heats, repechages and finals, and for some years in the past also took place on the Sunday. Races use 6-7 lanes of the 10 lane 2000m lake.