Be careful about this....there are 2 such fares floating about.

One is the Global Explorer fare offered by CX/AA/CP/QF/BA/IB/AY/LA/FJ. This is based on mileage and is available from most countries in all classes. However, some countries are only marketing this in economy class only. The maximum permitted mileage is 28,500 miles.

The other is the OneWorld Explorer Fare which is based on the number of continents travelled. Fares vary.

Where are you based? And where are you willing to go to start your journey? Remember that your fare is based upon which country you start the journey. You CANNOT issue a ticket based on say, a Korean fare , which is lower than a US fare and you start your journey from the USA.