Labels in colors - Blue: families of Japheth, Red: families of Ham, Purple: families of Shem
It's interesting that Noah's family is described as coming from the east in Genesis 11:2 and there are the three sons of Noah (Shem, Ham, and Japheth). Later, Abraham's family travels farther westward, toward the Promised Land, and there are three men named in the beginning of the journey in Genesis 11:31 (Abram, Terah, and Lot) and later there are the three Patriarchs (Abraham, Isaac, and Jacob).
In Genesis 10, where the descendants of Noah and their associated regions are described, each son's listing seems to follow a general clock-wise pattern. For example, Japheth's first son is associated with Europe, then moving north-east, west, and again north. Maybe I'm oversimplifying it, but it was something that I noticed as I went through the lists and marked them on the map.
Using Blue Letter Bible's Chronological Map, it appears that when Abram was born, there were 10 generations of his ancestors living at the time! (Noah - Shem - Arphaxad - Salah - Eber - Peleg - Reu - Serug - Nahor - Terah - Abram) The interesting thing is that the first of these to die was Peleg ("in his days the earth was divided").