Originally Posted by alect
If you want to go to ICN I don't think you can start in HKG - because you can't do HKG-ICN-HKG - your trip is over once you return to the city of origin - so you can't return to HKG. Likewise you can't do TPE-ICN-TPE-....
Actually, you could start in HKG and visit ICN, though it gets a bit ugly: After the HKG-ICN leg, you can do ICN-TPE-NRT on CX, and then of course NRT is a reasonable gateway to Europe, N. America, or Oz.
Pickles, if you don't already have the
OW timetable, I'd encourage to download it. I find it an indispensable tool in planning OW RTWs and award trips.