For a 60M block world I sure come up on the same village alot. P.S I heard once that there are around 46 quadrillion blocks in a Minecraft world but I don't know about the legitimacy of that.
If I am remembering correctly it is extended 20,000 blocks in every direction from the center of the map. Don’t quote me on it though.
I have heard the border is 100k x 100k. As i am more then 60k out in one direction i can say it's at least 60k x 60k.