Although the routing is not final yet this is what I have planned today in oneworld explorer tool:
BRU-CHI-MIA-LAS-LAX(stopover)-HND-PEK-HKG(stopover)-HYD-surface segment-HYD-LHR(stopover)-BRU
Total distance flown is 23132miles.
I missed the point that Kingfisher is only available in global explorer.
What I would like to add to this routing is DXB.
The routing would then be :
BRU-CHI-MIA-LAS-LAX(stopover)-HND-PEK-HKG(stopover)-HYD-surface segment-HYD-DXB-LHR(stopover)-BRU
Total distance flown would become 23319miles.
2) I don't know why you think this should be a 2 continent trip as you are definitely using 3: Europe, North America and Asia.
I did not really visit any part in Europe with my oneworld explorer itinerary. (Except leaving from BRU and arriving back in BRU. That's why I mentioned this.)