I just turned 50 last month so I was waiting to post this. I just averaged 13mph for the first time in two years on my normal ride. My ride is a 10 mile rolling-hills-stop-and-go-city-street-loop. I ride the same loop for comparison purposes. Why so slow? About two years ago I was in a car accident where a guy ran a red light and hit me head on (we were both in cars). Apparently, I have permanent damage to my left knee, back and right hip (suit pending). Prior to the accident, I was riding this loop between 15 and 16mph. So in two years time I have finally cracked into the 13's! I was never a racer or very fast, but I sure would like to get back to where I was. Just thought I would share a story in progress.