My commute is 17.6 mi each way. (per Google maps) Very flat, some bike lanes, some shoulders, some wide right lanes and some sidewalks because lanes are too narrow. I live in Orlando FL and take State Route 436 (Semoran Blvd) north of the airport all the way to Altamonte Springs before getting off and taking side streets to Longwood. takes 75 minutes so I must average 14 mph.

Ralph