I am right there with most of you! Depending on which bike I ride (Bike Friday is a bit slower than my Trek) and the terrain, I can average as low as 11.5 to 12.5 mph on a utility ride and 14-15 mph on a flat, shorter ride. I have occasionally averaged 16, but that's usually for only half the ride -- then we turn back into the wind, and I end up at 14.5 for the overall! For most of our longer recreational rides with several stops, I average 13-14.5 mph.

On longer rides I like to stop approximately every hour to stretch, give my posterior a rest and sometimes have a snack and/or bathroom break. The longer the ride gets, the more I have to stop; i.e., the first stop may be at 90 minutes in, but then it goes down to 60 and finally maybe 30-45 minutes at the end, when I'm petering out!