The United States is a country in the Northern Hemisphere, Western Hemisphere, and the Eastern Hemisphere. It consists of forty-eight contiguous states in North America, Alaska, a peninsula which forms the northwestern most part of North America, and Hawaii, an archipelago in the Pacific Ocean. There are several United States territories in the Pacific and Caribbean. The term "United States", when used in the geographical sense, means the continental United States, Alaska, Hawaii, Puerto Rico, Guam, and the Virgin Islands of the United States. The country shares land borders with Canada and Mexico and maritime (water) borders with Russia, Cuba, and the Bahamas in addition to Canada and Mexico.
Arizona is a landlocked state situated in the southwestern region of the United States of America. Arizona shares land borders with Utah to the north, the Mexican state of Sonora the south, New Mexico to the east, and Nevada to the west. Arizona shares water borders with California and the Mexican state of Baja California to the west along the Colorado River. Arizona is also one of the Four Corners states, at which Arizona touches Colorado.
Arizona has an area of 113,998 square miles (295,253 km2), making it the sixth largest U.S. state. Of Arizona's total area, 0.32% consists of water, which makes Arizona the state with the second lowest percentage of water area (New Mexico is the lowest at 0.19%).
Flagstaff (Navajo: Kinłání Dookʼoʼoosłííd Biyaagi, Havasupai: Wii Hagnbaj or Wii Baggwa) is a city located in northern Arizona, in the southwestern United States. In 2012, the city's population was 67,468. It is the county seat of Coconino County. The city is named after a Ponderosa Pine flagpole made by a scouting party from Boston (known as the "Second Boston Party") to celebrate the United States Centennial on July 4, 1876.
Flagstaff lies near the southwestern edge of the Colorado Plateau, along the western side of the largest contiguous Ponderosa Pine forest in the continental United States. Flagstaff is located adjacent to Mount Elden, just south of the San Francisco Peaks, the highest mountain range in the state of Arizona. Humphreys Peak, the highest point in Arizona at 12,633 feet (3,851 m), is located about 10 miles (16 km) north of Flagstaff in Kachina Peaks Wilderness.
Boulder is the county seat and most populous city of Boulder County and the 11th most populous city in the U.S. state of Colorado. Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of 5,430 feet (1,655 m). The city is 25 miles (40 km) northwest of Denver.
The United States Census Bureau reported that in 2010 the population of Boulder was 97,385, while the population of the Boulder Metropolitan Statistical Area was 294,567.
I-40 / US 89 at Flagstaff, AZ
I-10 / US 70 at Deming, NM
I-25 / US 85 at Las Cruces, NM
US 54 / I-110 at El Paso, TX