I have done 9.5 hours straight several times. The from southern Oregon to north of Seattle, Roads were flat enough to rattle the chrome bits of my stock pipes. No kidding! I'v rode thru Wyoming several times. The road goes up and down gradually,(rollers we call them). If you want to see road kill I highly recomend riding in Wyoming. The rollers hide Antalope by the hundreds. No kidding, one time on my way thru I stopped my road kill count in the 70s. I was useing my horn like a game system, trying to blaze thru the kill zone! Seriously! Everybody has thier critters, just becareful every one.
Scottie