The Kanangra to Katoomba (K2K) trail is a rite of passage for anyone who scoffs at the word difficult. Once a well-trodden track, it has faded into a barely-there footpad traversing 45km through the untamed wilderness of Kanangra-Boyd and the lesser-walked areas of Blue Mountains National Parks. Some even dub it ‘The Hardest Overnight Hike in…