You can redeem miles for travel on Amtrak -- from 7,500 miles for one roundtrip unreserved rail ticket to 50,000 miles for rail tickets including Roomette on Amtrak.
Enroll in Amtrak Guest Rewards online at www.amtrakguestrewards.com and receive 500 bonus points when you travel within 90 days or call to enroll at 1-800-307-5000 and receive 250 points when you travel within 90 days.