River Thames the stretch of river from Chiswick to Putney. Two rowing events on the River Thames are traditionally part of the wider English sporting calendar: The University Boat Race (between Oxford and Cambridge) takes place in late March or early April, on the Championship Course from Putney to Mortlake in the west of London. Henley Royal Regatta takes place over five days at the start of July in the upstream town of Henley-on-Thames. Besides its sporting significance the regatta is an important date on the English social calendar alongside events like Royal Ascot and Wimbledon. Other significant or historic rowing events
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.