Why are average speed readings so different on group rides?
Did a group ride today. We pull into to our rest stop and I hear people sharing their average speeds, as we seemed to be pushing it quicker than usual, so folks got curious. One says 18.2, another 18.6, another 19.1.
Are these devices that keep track of such stuff that erratic, or can little things make for legit differences in speeds in a group ride? There was occasional surging, but we basically stayed together.
Not that it matters any, but I've experienced this a few times. Just wondered what's up with that. Folks say speed doesn't mean anything, and maybe this is another example of that.