Typically average between 19mph and 21mph traffic dependent on my 26 mile round trip commute to work, but I am pushing hard. Normally slower on the way there due to the overall climb and faster on the way back. I am trying to improve this by intervalling my route, attacking the hills and coasting on the downhill. This is on an old racing bike with downtube shifters, but it's pretty light and I enjoy it. I am wired to try and beat last outings time each time as well... which is not helping my legs. Top speed of 34mph, so I don't have a high top speed but I tend to be pretty consistent with the lower speeds. Even at 34mph I am a bit terrified, speeds much above that I'm not sure I'd cope very well with.

I fortunately have a shower at work so not worried about sweat!