World Nomads has worked for me. You just buy a new policy when you need to extend the trip. If you buy one for 6 months it comes out to $80 / month. You must

World Nomads has worked for me. You just buy a new policy when you need to extend the trip. If you buy one for 6 months it comes out to $80 / month. You must be farther than 100 miles from your home residence at the time of your medical incident. I believe the catch is, if something happens and you need coverage beyond the end of your current policy, then renewing it doesn't earn you continued coverage for that incident. That would be what they call a pre-existing condition. So you'll notice when you sign up that the longer you extend your policy, the more it costs per month. E.g. 3 months might be $200 and 6 months $600