I'm probably the only runner in my club who runs with no gadgets or gizmos, so obviously I'm not on strava or the like. I lead a lot of runs for beginners and improvers. They are mortified that I don't know how far we've gone. At the end of runs they all compare data and if we happen to have only done say 5.8 miles, some of the more extreme may jog round the field to round it up!
I have started carrying a phone now, but only when running on my own over the hills.