If any of my horses ever decided to turn away from me when I called or approached with a halter, that horse would soon find out just how long I can make her run for! Every time she'd stop, I'd make her run some more. When finally she would stop and face me attentively, I would approach and halter her, then give her a treat. If she even blinked (figuratively speaking) while I was approaching, I would chase her again. Of course, this only works if you have the horse contained in a small enough area. On even a 2 acre field, it's exhausting to say the least, but I've done it.