I'm usually on the trails. They're close by and there is always phone service so I guess I ought to take it but I usually don't. My wife likes me to (deja vu?) but I've started just mapping out my routes before I go and she is fine with me leaving it. If I go on a long run then I'll take it. I'm not a luddite but I prefer to leave technology home when I go running. I'll admit though, there have been times that I've taken it and been glad!