The Cairo Alexandria Desert Road (CADR) is an important highway in Egypt that connects the country's two largest cities, Cairo and Alexandria. The road is a major artery for commercial and passenger traffic, and is a vital link between the two cities.

The road was built in the late 1960s, and is the longest highway in Egypt, stretching for over 250 miles (400 km). It is a four-lane highway, with two lanes in each direction. The road is divided into two sections: the Cairo section and the Alexandria section.

The Cairo section of the road begins in the city of Cairo, and runs south through the desert, passing through several small towns and villages along the way. The road then passes through the town of El-Alamein, before ending at the city of Alexandria.

The Alexandria section of the road begins in the city of Alexandria, and runs north through the desert, passing through several small towns and villages along the way. The road then passes through the town of El-Alamein, before ending at the city of Cairo.

The road is a major route for both commercial and passenger traffic, and is used by many Egyptians to travel between the two cities. It is also used by tourists, as it provides access to some of Egypt's most famous sites, such as the Pyramids of Giza and the Great Sphinx.

The road is also known as the "Cairo Gate," due to the large gate that stands at the entrance to the Cairo section of the road. The gate is a reminder of the ancient city of Cairo, and is a popular tourist attraction.

The Cairo Alexandria Desert Road is an important part of Egypt's transportation infrastructure, and is a vital link between the two largest cities in the country.