Backpacker magazine – find a hike USA

Their choices are a bit of a random hodge podge but include some good calls:

Glen Canyon National Recreation Area: Mocqui Canyon via Lake Powell

San Francisco: Bear Lake/Emigrant Wilderness

Appalachian Trail: Flume Visitor Center to US 302

Moab: Morning Glory Arch

Canyonlands National Park: Horseshoe Canyon

I particularly like their QUICK START page:

Trip-planning tips, gear lists, safety advice, and other essential wisdom ever hiker should know.

PLANNING
GEAR
FOOD
FITNESS
SKILLS
SURVIVAL
LEAVE NO TRACE
FIRST AID
STAYING WARM AND DRY
BUGS, BEARS AND POISON IVY

Backpacking 101 – Backpacker