Seems somewhat self explanatory to me but wondered what you all think the definitition is. It seems that the term is looked at somewhat derisively. It seems as though number runs are made up simply of pngs and easier caches where many can be crammed into one day. I wondered if what I did today falls into this category. I lined up 6 caches in Bradbury and made a hike out of it. A healthy hike that I was trying to reap healthful benefits from. What's everyone's take?