I was talking to a bloke the other week who walks all over the place on his own. He looked an experienced walker, from his kit and clothing, and I asked him if ever gets worried, being on his own, ever feels unsafe? He said "No, I've been doing this for years and never had any problems". I wonder how safe he is though. What if he slipped and fell and got stuck somewhere? Broke something? How safe is it doing distance walking on your own and what sort of precautions do you take before heading out?