Originally Posted by
gregf83
Most fit cyclists would have trouble maintaining 25mph for 20min particularly with a backpack, fenders and whatever else is necessary for a commute. They certainly wouldn't be riding at that speed with ease.
Yes, I agree on maintaining it for 20 minutes. I was simply referencing your comment about glancing down at your computer and seeing that you hit 25mph. You don't need to have a tailwind or draft to HIT that speed enough top see it on your computer. Maintaining it for more then a minute or two certainly requires much more effort.