I can hit 35 for short bursts in ideal conditions on a specific stretch that is slightly downhill on good pavement with few lights. I've topped 35 on a commute only once that I know of, so I picked 35-40 (you did ask for the max speed). Most days, my maximum speed is probably 25-30 mph.

This winter, my average speed is probably 12-14 mph, depending on how I feel. In the summer, my average is usually 15-18 mph, with 15 mph being more frequent than 18.

Downtown, I usually can keep up with traffic, but that's going slower than 35 mph.