I'm planning my first cross-continental trip for April 2018. I'm very familiar with the West but will cross some parts of the country where I've never ridden. I have a plan for Olympia, WA to Colorado (Denver and perhaps Cañon City). From there I will go to the Madison, WI area. I'll cross Kansas and/or Nebraska. I've never ridden in these states and am looking for interesting routes. I'll ride paved roads and avoid interstates as much as possible. Any route suggestions for these two states? Thanks.