All I can say to you folks is, when you do 'the run', take great care, and keep a very good lookout. As you can see, just from this thread, it is a very popular 'jolly,'
There's a kind of unwritten law that says you start at the north end around Howden and run south on the west side of the dam valleys, then climb out when you pass the road bridge over Ladybower. That's OK I suppose if everyone else knows the unwritten law.....Mind you I've never met anyone coming the other way, you would have to be climbing more or less all the time if you ran north.