I never used to use a watch while on the trail because I saw it as my opportunity to get away from structured time. But, one time I was dropped off a river trip to hike out of the canyon during what we thought was mid-morning on a grey March day. It turned out to be 3:00 and I didn't quite make it out of the canyon as planned. Wish I had a watch then but still think I would leave it behind and try to keep better track of time. How do you keep track of time on the trail?