Professional Fell Running (racing) in the :Lake District and other hill areas was well established long before Wainwright began writing his walking books. it was mostly from the farming community which was much larger than it is today. That's how the Naylor family being farmers got into fell running.As for enjoyment, it always amuses me that those that don't run the fells and therefore 'don't get it', think that it can't be enjoyable. Fact is it is enormous fun and when you can do long distances with lots of ascent it is truly satisfying, and I for one wish that I could still do it, I miss it enormously.