I've traveled over 4,500 miles on Amtrak trains. My rides have been great and filled with surprises.

After traveling over 4,500 miles on Amtrak, I've learned some surprising things about train travel. Malia Yoshioka In three months, I've traveled over 4,500 miles on Amtrak trains and come across some surprises. For example, my routes sometimes coincide with Amtrak's partnership with the National Park Service. I've also learned that Amtrak trains don't have middle seats. From taking a bullet train in Japan to backpacking around Europe, I've visited 43 countries so far, and I try to travel by…