Interesting, I tried
www.gmap-pedometer.com which was recommended somewhere else, and it was not ideal for me and my route. It essentially gave me the quickest route a car would use.
Unlike the experience Elkhound reports, I found the timing amazingly close to what I need (but I do realize there are many people who are faster than me - on this board for example, and also there are more leisurely cyclists,that are slower).
Either way, Google maps is the only place that I found, that will calculate a bicycle route for you and takes MUPs into consideration. Am I wrong about that?