Cheese Rolling. Having said that it could well be, haven't heard of some of the sports so one of them could well be a world wide form of Cheese Rolling. Modern Pentathlon maybe? For all I know it could be covered in there.
its a fair question, one that should be asked of alot of other events that a really just glorified exercise. on balance i reckon darts qualifies ahead of things like synchronised swimming, dressage, or anything relying on judges.