i think we need to leave out marathon,s and half marathons as well seeing as that is just a completely different matter. its long enough where running from the front works very effectively.
i think world records should be left out as well, but only if they are rabbited, unrabbited races can be put into this seeing as you are in fact, leading. with a world record you can have a rabbit and thats not the same thing.
I'll add my two cents though and say when tom byers beat ovett, walker, cram, scott and a bunch of other great milers in a 1500m world record attempt (I know i just said leave records out of this, but this is a bit different and deserves to get mentioned). the whole pretending to be a rabbit makes it even better.