How Far Israel From Egypt?

Since you did not mentioned in any cities, I would use Israel's Tel Aviv and Egypt's Cairo.
The Distance between Tel Aviv (Tel Aviv,Israel) and Cairo Airport (,Egypt) is : 386.19 kilometers (km).
In Other Units:
239.97 miles.
208.39 nautical miles.

You can calculate any other city's distance at Distance Calculator or Ask me!
Also visit following Blurtit question:
How far is it from Haifa, Israel to Sinai, Egypt?

If the children of Israel crossed the Red sea how long would it take them to get to the Promise land on foot?

You did not mention the cities of Egypt and Israel. You need to mention them for more accurate help. Here I am taking Israel's Tel Aviv and Egypt's Cairo.
The Distance between Tel Aviv, Israel and Cairo, Egypt is :
403.05 kilometers (km), 250.44 miles OR 217.48 nautical miles
Also visit Blurtit reference for distance of another city of Israel and Egypt.