This is an excellent guide.
Cycling across the continent is like going through a season of Planet Earth. In a single week, I went from towering redwood forests shrouded by morning fog, to crystal clear alpine lakes surrounded by pungent evergreens, to bone-dry salt flats in sweltering heat. Miles from city lights in Nevada and Colorado, the night sky presented thousands of stars and the glowing band of the Milky Way. When I made it to Kansas, the blue sky was so vast, and the horizon so uninterrupted, that I felt like I was going to fall off the face of the Earth. Cruising along the Blue Ridge parkway at sunrise, I watched the mountains turn from black to purple to blue to brown and the rising sun race across the valleys down below. I heard mooing cows, neighing horses, clucking chickens, barking dogs, chirping crickets and singing birds. Never have I felt more connected to, or grateful for, natural wonders than during this ride.
Doing something like this is attainable if you didn't have a support crew in Australia.