146 miles by foot?

Now his brothers went to pasture their father's flock at Shechem.13 And Israel said to Joseph, “Are not your brothers pasturing the flock at Shechem? Come, I will send you to them.” And he said to him, “Here I am.” 14 So he said to him, “Go now, see if it is well with your brothers and with the flock, and bring me word.” So he sent him from the Valley of Hebron, and he came to Shechem. 15 And a man found him wandering in the fields. And the man asked him, “What are you seeking?” 16 “I am seeking my brothers,” he said. “Tell me, please, where they are pasturing the flock.” 17 And the man said, “They have gone away, for I heard them say, ‘Let us go to Dothan.’” So Joseph went after his brothers and found them at Dothan. (Genesis 37:12-17)

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Serious problem with the above passage. Israel sends his son Jacob to Shechem to check on his brothers and bring back on what they were doing. Verse 14 explicitly states Israel sent Jacob from the "Valley of Hebron" here's where the problem comes in.

The distance from Hebron to Sachem is  60 miles. It is not possible for a young lad in the desert heat during the day to travel 60 miles just to check on his brothers and travel back 60 miles. It's absurd for the bible to according to Alex Kremlin the inspired word for God to claim Joseph made a 146 miles round trip on foot. It's gets worse, verse 17 tells us Joseph did not find his brothers in Shechem rather was told by a man his brothers went to Dothan. Dothan is 13 miles away from Shechem, which makes Joseph's journey 73 miles from Hebron? How did he even know how to travel such distance? 73 miles is no joke especially when you have no map or sat nav, travelling by foot amongst unknown people and animals. how could the father of Joseph allow his young child to travel in the mist of hyenas and desert bandits and tribes of people who can hurt him. 

the idea Joseph being a young lad knowing the route to Sachem is unbelievable. did he not get lost and what about Dothan, how did he even know how to get to Dothan? this goes to show he was either familiar with the routes and would travel such distance regularly, how plausible is that?

verse 12 says "Now his brothers went to pasture their father's flock at Shechem" we know Jacob had a large amount of sheep 30:25-43. please explain how did his sons manage to travel with such a large group of animals a distance which would be unbearable? the animals would also slow them down.

The chapter ends by Joseph being taken Egypt, so he doesn't manage to travel back. However, this doesn't negate the fact, Joseph was meant to travel back 73 miles to his father, that was the initial place in the first place. How is one to accept such absurdity form this story? Did Israel really think his young son was able to travel 146 miles on foot in the blazing desert heat on his own?