Lonely Planet is giving away itineraries online from an upcoming guidebook, "USA's Best Trips: 99 Themed Itineraries Across America." The free PDFs can be downloaded from Lonely Planet's Facebook page (facebook.com/lonelyplanet).
A different itinerary is available each week through Labor Day from the book, which comes out in September.
So far, Lonely Planet has released four itineraries - "60 Lighthouses in 60 Hours," Maine; Route 66; the Pacific Northwest and New Jersey diners. Each trip includes best times of year to go, a map and suggestions for dining, hotels and nearby attractions along the route.
Other itineraries still to come: Skyline Drive and the Blue Ridge Parkway, Grand Teton and Yellowstone and "Green Chile Adventure" in the Southwest.