BMS Doug wrote:If a skilled amateur (66 previous flights) can't manage more than 33 days then you won't be able to either (or realistically get anywhere close to even 33 days).
Are you talking about Leo Bodnar's B-64 (MOXER-4)? That launched in mid-July 2014 and terminated somewhere over Iceland near the end of November that year, so around 18 weeks. It circumnavigated the globe about 8 times, including a trip around the North Pole.
Unfortunately I can't seem to be able to pull the data out of APRS.fi (too large a date range), or habhub.
Sorry, yes, it was that long. I got the 33 days from his site which I guess needs updating
Back to the original poster - you need more realistic aims. Long flights need 2 things you don't have - money and experience. If you were even close to knowing how to do one you wouldn't be asking the very basic questions you're asking. To be blunt, find something you have some hope of achieving.