Head of the River Race only open to men's eights and is considered to be the peak of the head race season — attracting the top UK crews as well as foreign clubs. Composite crews, drawn from more than one club or institution, are not permitted. The Championship Course is that of the Oxford and Cambridge Boat Race but, unlike the Boat Race, the Head of the River Race is raced on an ebb tide from Mortlake to Putney. The starting time for the race is different every year and depends on the tide — the first crew (winner from the previous year) starts the
The Boat Race 2019 (sometimes referred to as the "Dark Blues") and the University of Cambridge (sometimes referred to as the "Light Blues"). First held in 1829, the race takes place on the Championship Course, between Putney and Mortlake on the River Thames in south-west London. The rivalry is a major point of honour between the two universities; it is followed throughout the United Kingdom and broadcast worldwide. Cambridge will go into the race as champions, having won the 2018 race by a margin of three lengths, and leading overall with 83 victories to Oxford's 80 (excluding the 1877 race, officially a dead heat