When doing a steady run what's the smallest loop you've run to make up your route? For example, say you were on a ship or confined to a small space indoors. For me it's probably laps of a small park when it snowed. I wanted to stay on the grass in case I fell as the ice had refrozen and the paths were dangerous, so did a 300m loop over and over. I know people have run around their gardens/yards and so on, and sometimes indoors, but I imagine a few of you have taken it to the extreme.

