California Zephyr. I'm on this train.
So I took the Empire Builder from St. Cloud, MN to Portland, OR and then the Coast Starlight from Portland to San Francisco then the California Zephyr from San Francisco to Chicago then the Lake Shore Limited from Chicago to Boston and then all the way back again. Spent a week in San Francisco thanks to my sister and a week in New Hampshire thanks to my friends Bruce and Jessie and a week in Boulder, CO thanks to friends Jenn and Pat. Whole trip took about a month. Aprox. 10,000 miles, equal to coast to coast three times.