Lexus Melbourne Cup Day will cap a busy fortnight for the Sydney-based jockey.
After riding at the Spring Champion Stakes meeting at Randwick on Saturday where she won the Five Diamonds Prelude (1500m) aboard Iknowastar, King was due to fly to the US to prepare for the mount on Japanese horse Satono Carnaval in the Breeders' Cup Juvenile Turf (1600m) at Del Mar on Friday.
She is the first Australian resident to ride at the world-renowned event and regards the Noriyuki Hori-trained youngster as a genuine chance.
"It is that time of year where it does clash with our spring carnival, but I'm very excited to go over there and on a horse that is a good chance as well," King said.
King will miss next Saturday's rich Golden Eagle Day program at Rosehill and Derby Day at Flemington to compete in the Breeders' Cup, before joining internationally renowned jockeys Ryan Moore and William Buick on a flight to Melbourne to ride in the Cup on Tuesday week.
Moore is booked to partner Jan Brueghel ($6.50) for Aidan O'Brien and Buick the Willie Mullins-trained Vauban ($8)
The Map has raced three times this spring, the latest when sixth to Onesmoothoperator in the Geelong Cup (2400m) on Wednesday and is a $34 chance for the Melbourne feature.