Quote from funkdefied
When you say 1 million Kilometers, I think you mean 1 million meters. The difference is 1,000,000 blocks as opposed to 1,000,000,000. Thats 1 million to 1 billion. You can't even travel 1 billion blocks. 12 million blacks=far lands.
Actually, if one were to travel in a multi-layered spiral track (making use of almost every block), it would be easy (well, achievable) to travel 1,000,000,000 blocks without reaching the far lands.