World Cup QFs? It's just home and away legs.
As far as distance goes, Australia traveled to Jordan, Kyrgyzstan, Tajikistan, Bangladesh, Japan, Saudi Arabia, the UAE, Thailand, Iran (to play Iraq) and Malaysia (to play Syria) on the path to the 2018 WC.
I don't even know how you'd go about getting to Bishkek, Amman or Dushanbe commercially from here lol
Cheapest return flight I found between Canberra and Bishkek is AU$2132, has layovers in Brisbane/Sydney, Guangzhou and Ürümqi, and the return leg takes over 40 hours total