And im not talking about out of game im talking in game as in Say i was transported to the world of Nirn how many actual miles would Cyrodiil be. I hope you guys understand my question.

Check http://www.gamesas.com/index.php?/topic/1192745-size-of-tamriel/.

Some over there are saying that Tamriel is over 600,000 sq miles (Cyrodiil is >100,000). Although in reality, if a planet, let alone a continent were that big, the gravity of the planet would squash everyone to a pulp, I don't care how strong they are.