Sights to see on a cross country drive

Grand Canyon has a great mountain bike trail on the North Rim.  You could ride from the Grand Canyon to Meteor Crater. 

Colorado, Garden of the Gods is an awesome sight and I think there are a few hills in that state that people like to climb. 

Amarillo, Go to the Big Texan and try to eat the 72 oz steak Protein load.

Weird Al said it was in Minnesota???

Must be getting ready for the world's largest haybale??

Yeah, he could see it from the edge of the state since your state is Flatter than a Pancake.

http://www.improbable.com/airchives/paperair/volume9/v9i3/kansas.html 

I would rather eat a 72 oz steak than drive through Kansas...

Hahaha I love this:

Conclusion
Simply put, our results show that Kansas is considerably flatter than a pancake.

I think he was looking for the biggest ball of twin IN minnesota...as opposed to the biggest anywhere.

If your first leg is Seattle-Yellowstone an easy stop off would be Couer d'Alene (home of IM CDA-obviously). I know the lake is mostly busy with boats and seaplanes on non-race days but you could probably get in a good bike/run along the IM course (or shorten it).

If you're into the outdoors I would stop by Glacier NP before hitting Yellowstone, though at your timeframe it still probably will be snow covered (making snowshoes a necessity if wanting to hike).

I hear the Memphis in May triathlon is a good one.

Brian

I just drove through this today in Oklahoma - it's a Prairie Preserve that houses 2,700 bison, which roam free. So you can get right up close, they cross the roads, no fences, etc.

Right now they are herding all of them for medical stuff and micro-chipping, but they said April/May is the best time as the calves are born and they are very active. 

That seems cool!