Reading about people who've needed to be rescued because they have misjudged how long a walk would take, I wondered what method you guys use to work out how long you think a walk will take to get you safely to the end? Do you use Naismith's rule or work on your own average from personal experience? Do you take it easy and take in the flora and fauna, maybe do some photography along the way, stop for extended breaks, etc. or do you try to get as many miles in as you can at as strong a pace as possible? I suppose it will depend on the time of year and whether the objective is a specific goal.