Shmos 2:15 – Moshe fled from Paroh and dwelt in Midian.
Why did he choose Midian?
The only slightly helpful references I saw said
a) (attributed to a Medrash but I do not see it) that he was miraculously transported to Midian (and so I guess stayed where he was deposited) or
b) (attributed to Rashbam but I do not see it) that he was bound for somewhere else and not intending to stay in Midian but having met Tziporah decided to stay.
Alshich says that he stayed in Cush for some time but since nothing of importance happened there, the Torah does not mention it but it is mentioned in Divrei Hayomim and again I have not been able to find the reference.