I've hiked in the dark a few times, like the time i wanted to cross cumberland valley in one shot ... 19 miles or so is it? ... I'm tall, and sometimes i walk pretty slow and just drift off too my surroundings .... On that day, i started at 9:40am and ended up missing the shelter, i forget its name ... the one at the end of the valley walk ... and ended up trying to find a flat spot for my and brother's tents in the dark ... and even with our headlamps it was rough finding a spot, but i would do it again np .... Your senses kick in and no matter the situation ... you'll have an answer for it if you're prepared. Sleeping on the trail, or off 200 yards from it ... In the course of a thru hike or long hike ... you'll do one of both atleast once .... i'd put money on it .. lol, i know it happens to me, cause i walk all day and sometimes the camp site i saw 3 miles back should of been my final walk of the day ... sometimes you should listen to yourself ... ha! see i'm rambling.