I traveled to 11 states in 30 days using Amtrak's USA Rail Pass. Here are 6 things I wish I knew before buying it.

I bought the Amtrak USA Rail Pass, and there are a few things I wish I had known beforehand.

Malia Yoshioka

• I purchased Amtrak's USA Rail Pass, which allowed me to take 10 trips for $499.
• Although I thought the pass was a great value, there are a few things I wish I knew ahead of time.
• For example, long trips provide the best value, but sleeper-car upgrades aren't available.

I took my first long train ride when I was 18, heading upstate from New York City.