That's a lot of miles to use on magazines.

You could move them 1:1 to Amtrak Guest Rewards and redeem for $3,000 worth of $100 gift cards (10,000 points each):
Budget® - $100 Gift Certificate
Hertz - $100 Award Check Voucher
Hyatt Hotels & Resorts - $100 Hyatt Check Certificate
Barnes & Noble Booksellers - $100 Gift Card
Bath & Body Works® - $100 Gift Card
Bloomingdale's - $100 Gift Card
Chili's® - $100 Gift Card
On The Border Mexican Grill® - $100 Gift Card
Maggiano's Little Italy - $100 Gift Card
Romano's Macaroni Grill® - $100 Gift Card
Gap - $100 Gift Card
Linens'n Things - $100 Gift Card
Macy's - $100 Gift Card
Pottery Barn® - $100 Gift Card
Red Lobster®/Olive Garden® - $100 Gift Card
Ruth's Chris Steak House - $100 Gift Card
SpaFinder - $100 Gift Card
Staples® - $100 Gift Card
The Home Depot® - $100 Gift Card
The Sports Authority® - $100 Gift Card

Also, train travel would be an option with Amtrak Guest Rewards. If you are unable to fly, you might consider taking the train, traveling in the comfort of a sleeper.