The longest i've ever rode my bike was from Fresno to Merced, about 1 hour. in that one hour, my butt was hurting because i sat too long (but i have a skinny butt). The ride was smooth and YES you can go over 70MPH. i can't stand going slower than 85MPH. the fastest i've gone on the bike is 107MPH. I also lowered my bike and did my own little exhaust mod. When i have time i'll put up a post with pics. I just drilled holes in the exhuast to make it sound louder but i felt that it gave me a bit more power too.