You have five segments in Europe, so the fifth would cost extra. Without checking the schedules I would say something like this would be a lot more miles:
BOM-HKG-KHI-HKG-AKL-MEL-PER-SYD-JFK-BGI-JFK-BGI-JFK-SFO-LHR-IST-LHR-DXB-LHR-HKG-BOM
which is 64497 miles (although you'd need a side ticket to get to ORD).
And in the summer you could do:
BOM-HKG-KHI-HKG-AKL-MEL-PER-SYD-JFK-SFO-ORD-ANC-ORD-SFO-LHR-IST-LHR-DXB-LHR-HKG-BOM
which is 65536 miles.
Or for a 3 continent
BOM-HKG-KHI-HKG-JFK-SFO-DFW-ANC-DFW-ORD-SFO-LHR-IST-LHR-DXB-LHR-HKG-BOM
for 53419 miles.
[This message has been edited by christep (edited 10-10-2003).]