If i was to try to define running "talent" I reckon it would be the ability to train hard and recover quickly to train hard again, without suffering injury, over a sustained period to enable physiological improvements. There's no real "skill" to learn with running, compared to say, tennis, or skiing. but you do still have to put the hours in.
Clearly there are going to be people at one end of the spectrum whose physiology allows them to improve at a quicker than average rate. The elites are those people who have a combination of physical attributes suited to running fast, but who also work very hard at it.
I agree with Phil that it is slightly annoying to see people dabble in an interest of yours, then be dismissive about your efforts. But then people like that just lack class, so I don't bother too much with them.