There are some guys that have ridden really far. 1000 miles or more. I saw a YouTube video with a guy from Singapore or Japan who rode a tw from New York to Texas. I've made the trip from Austin to Seguin. Around 60 miles one way. Half was freeway, but I stayed on the feeder. Speed limit is 70-75 in Texas. Sometimes more. 85 on the toll roads. I'm not touching that.
I live in the country now, I ride with 15/45 gearing, and still usually cruise around at 45-50. I speed up a little to avoid sketchy spots, but that's where she seems happiest. I'm a little guy, 135 lbs. so I don't need to reel her up to move my weight around.
When I get around 60 mph, the motor smooths out, but she's really spinning. Around 6500 rpms according to gearing commander. Some guys say, "that's nothing! Twist that throttle!" But this is my first motorcycle and my only transportation, so I try to be nice to her. Could be fine, but I'm still learning.