I realise it's not quite the same situation, but I moved 200 miles away from my grandparents at the age of 7. I was lucky enough to visit them in school holidays and I always felt close to them, despite the distance. It was like having a holiday home and they would take me on trips out and we would play in the garden. I would speak to them weekly on the phone and my Nan would write to me, which I loved. So although it might feel a long way away, like others have said, there are ways for you to stay close to them, especially with Skype and email, so think of how you can do this - I'm sure they will appreciate it and they will continue to love you as they do now.
Old sayings with a theme 2 ( continuing *nanna8*'s thread)
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.