How long would it took Moses to cross the desert if they did not wander?

Answer 1

A small band of fit men could walk from the Red Sea to the southern edge of what would become Judah in a few days at most, as long as they had food and water, and they followed the North Star and other signs for direction.

However, the biblical Exodus could not have been a small band of fit men. The Bible says there were 600,000 fighting men, which means there would have been at least 2.5 million people, including the very young and elderly, sick and injured people and women in the final stages of pregnancy. There are said to have been livestock and, presumably, wagons and other goods to slow them down. If the Exodus from Egypt really occurred as described in the Bible, the last of the people could have been crossing the Red Sea a month after the vanguard began its crossing. And every day, there would be births and burials to further slow progress. If such an enterprise were possible in ancient times, it must take probably at least two months from the time the first Israelites croseed the Red Sea until the last Israelites reached the Promised Land, by the shortest and quickest route. Meanwhile the blundering Egyptians managed to lose an entire army without the reported death of a single Israelite.

Answer 2

From Egypt they would have to walk across Saudi Arabia, Jordan and then Cannan. So it would take a few years as they had cattle as well.And hostile climate and people as well on the way.