I've ridden about 3,500 miles now, and my average speed is still remaining between 9 and 10 mph. I pedal actively but I'm not concentrating on upping my speed as much as I am working on doing longer distances. I managed a 52 mile ride last week in 5 1/2 hours. We have lots of hills around here, and my bike is not a super lightweight carbon racer. For me, it's not about speed. It's about getting healthy, riding more, and just having fun.