I'm planning on doing a 6 continent RTW in First next year to get the most miles possible. I did a search but couldn't find any info. on that. I would probably start in the US or maybe Europe as I have a $8500 credit to use. Would be flying strictly for miles so any help would be appreciated. Also looking to do it in the shortest period of time. I'm sure this has been covered before but I couldn't find the thread. Thks