So Im getting pretty tired of this: Enemy mages will immediatly run away from me and they will not stop. Since they have what amounts to one peice of clothing while I do not, i cant catch up. It would be so annoying if *every single one of them* didnt do this...But they do! Is there some way to make this stop? Because they will run through levels of dungeon and outside again, and then i can never fast travel cause im always in combat.

Try shooting them with arrows?

Just a thought.

Obviously it depends on your character's build and your playstyle. For some players, a high Sneak value can all but break the game, really. Illusion is a very overpowering skill. So, being sneaky with ranged or melee should stop them, as a basic approach. There's more than one way to skin a mage.

Or get off your armor, dance around the spells, catch up and chop the head off.

Drain Fatigue, Calm... as was said, there's more than one approach.