I don’t pay to much attention to average speed. There are so many variables. Wind. Hills. Unscheduled stops. In general, my average speeds here are higher than in the city. There is no traffic. No stop lights or signs. I just roll out the back door and go for as long as I like.
But, when I notice my average speed is gradually improving and my average heart rate is lower, it tells me my fitness is improving.
It tells me I can do the work with less effort. That was the case on this morning’s ride. It was faster but mostly a Zone 1 & 2 effort.