I can relate to that question, Im from Brazil and it is very hard to find buddhists here and when I did I found only New Kadampa Tradition and FPMT (both Tibetan Mahayana), I do like FPMT very much and went to a great retreat in Nepal with them, but I'm currently more interested in the Theravada tradition.
This is what I do:
1- When I have the chance to go to Asia, I return with lots of books and audio CDs from theravada monks, last time I went to a theravada temple was in Kuala Lumpur and the reception was great (they gave me everything for free, of course I did some donation to compensate, but it was really optional)
2- I use internet a lot, videos, discussion foruns like this one and ebooks. I can recommend the videos from Venerable Yuttadhammo Bhikkhu in youtube
Dont worry if you are not physically close to the sangha, use the tools you have available and when you can (holidays) go for a retreat :)
hope it helps