Idaho  è il nome di uno stato federato USA, nella regione delle Montagne Rocciose
All of the following cities are good bases for outdoor activities within their regions.
- Boise— Capitol and largest city in Idaho, some high tech employment
- Coeur d'Alene— Northernmost Idaho city, (don't tell the folks in Bonner's Ferry this) surrounded by mountains and excellent recreational lakes
- Idaho Falls— The commercial and agricultural center of Eastern Idaho, home of the Idaho National Engineering Labs
- Moscow— Home of the University of Idaho, combination agricultural and college town
- Shelley— Home of the Spud Day celebration
- Buhl— Home of the Sage Brush Day's celebration, Snake River Canyon, and Balanced Rock.
- Sun Valley -- the first great ski resort in the U.S.
- Craters of the Moon National Monument -- volcanic park with vast fields of seemingly lifeless lava, fun lava tubes to explore
- Frank Church River of No Return Wilderness -- follows the Snake River through Hells Canyon (as deep as 9,300 feet, much deeper than the Grand Canyon) north towards Lewiston, where the Clearwater and Snake River meet
- Yellowstone National Park -- Second only to Yosemite as the most majestic National Park in the lower 48 states, but weirder, more colorful, and more spectacular, filled with hot springs, geysers, and fumaroles. Mostly within Wyoming, but the most notable feature, Old Faithful is probably most easily reached from Idaho Falls via West Yellowstone, Montana - though the park road is only open in summer (May to early November).
- The Nez Perce Indian Reservation, home to Native Americans whose forebears helped Lewis and Clark through the winter during their expedition, is just East of Lewiston.
- City of Rocks National Reserve -- Located on the southern edge of the state. Popular with hikers and rock climbers for its maze of massive boulders (some over 100 meters in height).
- Lewis and Clark National Historic Trail