In 2001 I spent a year doing London-Frankfurt-Mumbai//Chennai-Singapore-Hong Kong-Singapore-Denpasar-Darwin-Perth-Yulara//Sydney-Auckland//Christchurch-Singapore//Bangkok-Tokyo-Vancouver-Boston-London.
Then last year did a much-shorter Newark-Frankfurt-Bangkok-Haneda//Narita-JFK.
Currently in the middle of a JFK-London-Frankfurt-Seoul-Beijing-Hong Kong- JFK.
Thankfully the latter 2 mostly in F unlike my 2001 backpacking saga...