Not a runner anymore, but, when I used to be (way back in the mists of time when I ran in high school), I easily could tell in my joints what surface I was running on. In the end, I ran on a lot of country roads that didn't have sidewalks a lot more than I ran on city roads and it became a toss up which surface I would have preferred, the hardness of the concrete sidewalks that were relatively flat, or the harshness of the heavily crowned country roads and the effects of that angle on my ankles after miles and miles. And that didn't take into account the country bumpkins and slack jawed yokels (most of whom I knew and went to school with) who would swerve at me even though I'd get off the road onto the unpaved shoulders whenever I saw someone coming.
No, but having to scroll through a massive signature that takes up a third of the page over and over and over gets really tedious.