Mine have been between 100 and 250 yards, but we don't have a lot of places where we encounter them at tremendous distances around here. Either brush, trees, or hills get in the way. I haven't shot many, probably 15 or so, but don't hunt them much, just shoot them on my walkabouts or when deer hunting.
The best shot I've made was on a running 'yote from a sitting position on a rock wall. He was 188 yards running dead away. Got him through the neck, killing him instantly, using a .243 Win, Rem 700, with a Leupold Vari-X 2, 3-9X.