44 yo 6'2" 192 lbs .. about the same as the other guys - averaged 17.5 on a solo hundo in rolling hill terrain earlier in the year .. faster of course for shorter rides.

I also only look at avg mph at the completion of the ride, so I have no idea what I avg on flats. For that matter, I have been concentrating more on hill climbs, strength and endurance training, etc. and focusing less on miles per week.