Numbers 33:6-8

Young's Literal Translation

⁶ And they journey from Succoth, and encamp in Etham, which [is] in the extremity of the wilderness;

⁷ and they journey from Etham, and turn back on Pi-Hahiroth, which [is] on the front of Baal-Zephon, and they encamp before Migdol.

⁸ And they journey from Pi-Hahiroth, and pass over through the midst of the sea, into the wilderness, and go a journey of three days in the wilderness of Etham, and encamp in Marah.