Bernborough first raced under the ownership of A.E.Hadwin. A Queensland trainer, J. Roberts, then leased the horse. His racing colours were orange, purple sleeves, and black cap. His trainer was Harry Plant. When he was six years old, he was moved to
Sydney and following his sale to A.O. Romano for 2,600 guineas, his nominations were accepted. Then he began a winning streak of 15 races. His wins included the
Newmarket Handicap at
Flemington carrying 9 st 13 lb (63 kg) and the
Doomben Cup under 10 st 11 lb (68 kg). He started 37 times for 26 wins, 2 seconds, and 1 third. On 2 November 1946, Bernborough had his last race in the
LKS MacKinnon Stakes. Challenging for the lead just after entering the home straight, he suffered torn sesamoid ligaments and had to be pulled up. The great mare
Flight, who had finished second to Bernborough on many occasions, went on to win. ==1946 racebook==