There is no better way to see the country than on a bicycle!
I rode the TransAmerica Bicycle Route, using detailed maps published by Adventure Cycling, from May 1st to July 21st in 2010. My friend, Steve, and I rode the 4,250-mile ride self-supported, carrying everything we would need on our bikes. Highlights: Blue Ridge Parkway, Appalachian Mountains, Kansas prairies, Rocky Mountains, all the great people we met along the way.
The KATY Trail is a 225-mile long Missouri State Park running from St. Charles, Missouri to Clinton, Missouri. It follows the old railroad route of the Texas, Missouri, and Kansas Railroad (nicknamed the KATY) and runs next to the Missouri River for a good share of its length. It is crushed rock and is somewhat rough and/or soft in places. I suggest a hybrid or mountain bike.
Tour Riding In Rural Indiana. The September ride is a supported ride between southern Indiana state parks. On most other rides everything at the overnight stays centers on the campground, but on this ride everything centers around the state park lodges, which are very nice. Leave the tent at home and spend the extra money for the lodges; they are worth it.