Hi.
I live in Iceland. Yes you can get fuel at BIRF for the trip to Greenland BGKK (Kulusuk). From memory I think that is 356NM.
I have flown BIRF to Deadmans point which is the closest practical area in Greenland to land and refueled from drums. That distance is about 290Nm (again from memory!).
Problem with departing from Rif (BIRF) is that it is not an point of entry airport so arrangement has to be done with customs.
From west coast of Greenland I would suggest for shortest distance BISS Sisimiut to Pangitang in Canada. But check for fuel availability in Pangitang and take cash to pay. Broughton Island is also a possibility. But shortest route is from Sisimiut in Greenland. Again Iīm not sure about if its Point of entry airport but you could always just take the chance and just take off from these airports, thatīs what I did and I was never questioned!
You mentioned BIPA, there is no JET-A available there unless you have it trucked there! BIRF is better option and usually if you talk to Icelandic customs and explain that you have a short range aircraft they will allow arrangement with local police to clear you from customs in Iceland. On the whole trip the Icelandic customs will be the strictest, we donīt want any drugs importet here! and in Canada make sure you donīt take any fruit or vegetables into the country. Greenland customs will normally not be very bothered with you expecially when you are leaving the country.
Here is AIP Iceland AD4.
http://www.caa.is/Forsida/Flugmalaha...onPublication/