I am a 1K on UA; my wife and I are planning to take a RTW trip, leaving around June. I have accumulated about 500K in UA miles, and would like to blow through these miles before spending anything on flights. My confusion stems on how far we can get using miles alone.

Most of the threads seem deal with the round the world fares available through Star Alliance, not booking a bunch of OW Star Alliance tickets through UA. I just have no idea how far we might be able to get on 500K frequent flier miles, since the only calculators I have seen deal with RT tickets, not OW (maybe OW tickets are always 1/2 the miles?).

Any thoughts or references anyone can give me to get started? General thoughts of an itinerary are as follows: Denver, Tokyo, Beijing, Hong Kong, Hanoi, Bangkok, Kathmandu, New Dehli/Bombay, Nairobi/Dar es Salaam, Cairo, Istanbul, Athens, Frankfurt, Denver.

Many thanks in advance for any guidance anyone can provide!