I'm unsure Henk is planning to go to Canberra. So....
Yorketown, Yongala, Yatala, Yunta Yeelanna for the "Y"
Port Augusta, Port Pirie, Peterborough, Paskeville, Purnong, Pinnaroo...lots of Points and Ports on Yorke and Ayrie Pen too.
Orroroo, Oodla Wirra, Olary, Overland Corner for the "O"
Just put them in an order that makes an SS1600k.
I should read all the replies before posting. LOL