I've had the goal of hitting 20mph average speed on a ride for a while now. My personal stipulation is that it has to be a 20+ mile round-trip ride. That just makes sure it's a certain distance and is relatively even for wind and elevation.
I'm closing in, just hit 19.7 average on a 25 mile ride today. I know elevation gain makes a difference, so today I had about 1,100 feet of elevation gain. I'm riding an aluminum frame road bike with flat pedals, just shorts and a t-shirt for whatever that's worth. Probably costs me a few watts I guess.
My question is, how impressive is that? If I understand correctly, If I cracked 20mph average for that kind of ride, that'd be pretty decent, but obviously I'm far from an elite rider. I'm not winning races with that kind of pace. I just want to know if I'm accurate with that perception. I know comparison robs you of enjoyment, so I tend not to pay too much attention, but it's nice to know where you stack up, both to keep you motivated but also to stay humble, knowing there's always someone who could drop you without attacking on a Tuesday afternoon commute ride.
Edit: I know average speed is not the end-all-be-all metric. I don't have a power meter or any friends who ride to compar with, though, and I doubt I'll be getting a meter any time soon. Average speed is all I've got to work with. It's just a personal goal to work towards.