I do 20+ mile rides on my cruiser, on paved trails or roads. My wife does the same ride on her Jamis Citizen, which is probably somewhere between a cruiser and a touring bike, leaning a lot towards the cruiser side. We're both in our late 50s, so we're not trying to make the best times or impress anybody--- we just love riding. (Best thing I ever did was get her a bike for Mother's Day!) Still, we usually average 12-16 mph on these rides, on fairly heavy bikes, with her pacing. I have noticed that I average 5-8 mph higher speed on a lighter weight, though aged, road bike that is maybe12 lbs lighter . Still, my cruiser is like a pickup truck--- I take it everywhere and use it for everything, because it's tough and comfortable, even if it's not the fastest ride I own. ALL bikes are fun--- what kind of fun do you want to have?