Cross reference
Exodus 13:20
20 They took their journey from Succoth, and encamped in Etham, in the edge of the wilderness.
Exodus 12:37
37 The children of Israel traveled from Rameses to Succoth, about six hundred thousand on foot who were men, besides children.
Numbers 33:5-6
5 The children of Israel traveled from Rameses, and encamped in Succoth.
6 They traveled from Succoth, and encamped in Etham, which is in the edge of the wilderness.