Can't believe I read this whole thread! I track my speed just to get an idea how I am doing other than how my body feels. Sometimes I am surprised, I feel like sh..... but it was my fastest ride of the week! Also the opposite is expereinced. The tracking is hard data.

I am not comfortable riding to work without a shower option, so I take the bike on the Metro and ride home. Overall elevations is about 120+ feet so it is fairly flat. The distance is about 10.75 miles. When I started at the end of May, 2013, the average speed was around 12.5. Weather and a number of other factors determine how often I ride home. I am within 100 trips as of today. My slowest ride was the first one at 12.1 MPH. The fastest was about a month ago at 17.7 MPH. A big part is the wind direction. My monthly average has been increasing with the last two monthly averages over 16 MPH. April was a 139 miles and May was 152. This year I have commuted 476 miles.

In the past my road bike averages were about 3-4 MPH faster than with the commuter. I think that may be different now with a significant increase in difference. I would say but I need to do another validation run before opening myself to flaming!

Some of you may have seen this but I am always looking for an oppportunity to post pics and this thread is whoafully bare of pics! This is my ride except I now ride with a Brooks Pro saddle. The bike weighs about 27lbs unloaded sans rack and fenders. This pic represents what it might look like when I ride and typically it is about 47lbs with all my stuff in the trunk. The tires are Panaracer Uff Da and are 2.3 inches wide.