What do you think ?
Ok I've used the one world validator and come up with the following combination which seems to be the most amount of miles (60,322 miles and 135,728 AA miles) that I can squeeze into a DONE4. Anyone have any ideas on whether this can be improved upon and whether any of these routes don't have 3 class planes.
CMB-HKG-NRT-JFK-MIA-YUL-DFW-ANC-ORD-LAX-LHR-DXB-LHR-MEL-CNS-PER-ADL-SYD-NRT-HKG-CMB