This is the other thing I found odd. Jay's Father remarked that it was out of character for his son to walk any kind of distance, stating that he'd have to drive him a few hundred yards just to get his hair cut. Why was he then prepared to walk however many miles he intended on walking to get wherever he intended on going when there was a bus stop quite literally on the doorstep?
What was so urgent that he couldn't wait for a bus, but justified (in his head) an enormous hike that would have taken significantly longer than a bus journey plus the wait? He had a map on his phone, so he would have been aware of the distance he might have had to travel.
In my own opinion, he was trying to get away from that AirBnB as quickly as possible.