I did my first full bike commute to my new job, 33 miles all told door to door. Got here in 2:05 riding time (2:15 actual time door to door) giving me an average of 15.9mph.
Pretty happy with that, though I don't think I'm fit/strong enough for a 5/5 full commute (nor can I afford the extra time it takes, even though it worked out to be only 35 extra minutes). Great ride, my mess. bag isn't so great over long distances with even a reasonable weight in (lunch + tools + clothes) so I'll have to put the rack on, but even at -2 leaving I was very comfortable within 20 mins and had a really good long ride.
I'll be riding back tonight, too - have to see how my body fares tomorrow as it's been a good few months since I rode over 50 miles in a day.