Genesis 14:8
Then the king of Sodom, the king of Gomorrah, the king of Admah, the king of Zeboiim, and the king of Bela (that is, Zoar) went out and prepared for battle. In the Valley of Siddim they met
Genesis 13:10
Lot looked up and saw the whole region of the Jordan. He noticed that all of it was well-watered (before the Lord obliterated Sodom and Gomorrah) like the garden of the Lord, like the land of Egypt, all the way to Zoar.
Genesis 19:20
Look, this town over here is close enough to escape to, and it's just a little one. Let me go there. It's just a little place, isn't it? Then I'll survive."
Genesis 19:22
Run there quickly, for I cannot do anything until you arrive there." (This incident explains why the town was called Zoar.)
Genesis 14:2-3
went to war against Bera king of Sodom, Birsha king of Gomorrah, Shinab king of Admah, Shemeber king of Zeboiim, and the king of Bela (that is, Zoar).
Genesis 14:10
Now the Valley of Siddim was full of tar pits. When the kings of Sodom and Gomorrah fled, they fell into them, but some survivors fled to the hills.