Between now and mid-December, Amtrak Guest Rewards members will earn double miles on all train travel. Go to Amtrak's website for details. I've included a pic of the Downeaster train above, which runs between Boston and Portland, Maine, because Evan and I plan on taking a trip aboard it next time I visit him in Boston. I'm typically not a promoter of the Guest Rewards program, because the miles are based on dollars spent, rather than miles traveled, and it seems to take forever to accumulate enough miles to make only a one-way trip within a single geographic zone. But with the miles doubled, award travel becomes a bit more feasible. To earn more miles, you might consider the Amtrak Guest Rewards credit card--offered through Mastercard.