Sadly the "faze points" aren't that far away. If I remeber correctly, from the city limits you can fly (outwards/up) for around 30 seconds (maybe more) at full speed. If you youtube skyghene one of his videos explores the areas and I believe that he flies very far out in one of them. I'd do it for you but Im using a phone, and that isnt very good for finding great video information.
Official Zoroark of the Pokemon B/W 2 Boards "Prinny bombs for my Prinny friend! Prinny dood meets a Prinny end!" - Skellman