The MacRobertson Trophy Air Race (also known as the London to Melbourne Air Race) took place October, 1934 as part of the Melbourne Centenary celebrations. The idea of the race was devised by the Lord Mayor of Melbourne, and a prize fund of $75,000 (Australia used £ at that time) was put up by Sir Macpherson Robertson, a wealthy Australian confectionery manufacturer, on the conditions that the race be named after his MacRobertson confectionery company, and that it be organised to be as safe as possible.
The race was organised by the Royal Aero Club, and would run from RAF Mildenhall in East Anglia to Flemington Racecourse, Melbourne, approximately 11,300 miles (18,200 km). There were five compulsory stops at Baghdad, Allahabad, Singapore, Darwin and Charleville, Queensland; otherwise the competitors could choose their own routes. A further 22 optional stops were provided with stocks of fuel and oil by Shell and Stanavo. The Royal Aero Club put some effort into persuading the countries along the route to improve the facilities at the stopping points.
The basic rules were: no limit to the size of aircraft or power, no limit to crew size, no pilot to join aircraft after it left England. Aircraft must carry three days' rations per crew member, floats, smoke signals and efficient instruments. There were prizes for the outright fastest aircraft, and for the best performance on a handicap formula by any aircraft finishing within 16 days.
Take off date was set at dawn (6:30), 20 October 1934. By then, the initial field of over 60 had been whittled down to 20, including three purpose-built de Havilland DH.88 Comet racers, two of the new generation of American all-metal passenger transports, and a mixture of earlier racers, light transports and old bombers.