I pulled off a moving average of 28.1km/h on my commute to work yesterday, over a distance of 23km. The return trip was quite a bit slower due to a headwind, though. That 28.1 was the fastest commute I've ever done (though not quite as fast as the 28.2 I did over 75.5km a couple of weeks ago on a much more suburban route with a lot less traffic and traffic lights) and let me tell you, it was tough. Stop lights and traffic really does make it hard to maintain an average even close to 30km/h.

I wonder if I was riding a drop-bar rode bike rather than a road hybrid if I'd be able to put my average over 30km/h, but as I don't like drop bars that point is rather moot.