The Olivet Discourse is not the end times, but rather about Messiah’s proclamation that the temple in Jerusalem would be destroyed... Its the end of an age, NOT the end of the world.
in Matthew 24:34 Messiah told us that all of the things that he said would be fulfilled in that generation:
“Verily I say unto you, This generation shall not pass, till all these things be fulfilled.”
You couldn't avoid a world wide tribulation by escaping to the hills.
Remember what the Jewish leaders said when they handed Messiah over to be crucified:
“And all the people answered and said, “His blood be on us and on our children.” Matthew 27:25