China's National Highway G010 runs from Tongjiang in Heilongjiang

Heilongjiang

For the river known in Mandarin as Heilong Jiang, see Amur River' is a province of the People's Republic of China located in the northeastern part of the country. "Heilongjiang" literally means Black Dragon River, which is the Chinese name for the Amur. The one-character abbreviation is 黑...

 to Sanya

Sanya

Sanya is the southernmost city in China and is a part of Hainan Province. In 2006, it had a population of 536,000, making it, after the provincial capital , the second most populous city on the island. The city is renowned for its tropical climate and has emerged as a popular tourist destination,...

 in Hainan

Hainan

Hainan is the smallest province of the People's Republic of China . Although the province comprises some two hundred islands scattered among three archipelagos off the southern coast, of its land mass is Hainan Island , from which the province takes its name...

. It is 5700 km (3,541.8 mi) in length, the longest China National Highway to date.

It passes through the provinces of Heilongjiang, Jilin

Jilin

Jilin , is a province of the People's Republic of China located in the northeastern part of the country. Jilin borders North Korea and Russia to the east, Heilongjiang to the north, Liaoning to the south, and Inner Mongolia to the west...

, Liaoning

Liaoning

' is a province of the People's Republic of China, located in the northeast of the country. Its one-character abbreviation is "辽" , a name taken from the Liao River that flows through the province. "Níng" means "peace"...

, Shandong

Shandong

' is a Province located on the eastern coast of the People's Republic of China. Shandong has played a major role in Chinese history from the beginning of Chinese civilization along the lower reaches of the Yellow River and served as a pivotal cultural and religious site for Taoism, Chinese...

, Jiangsu

Jiangsu

' is a province of the People's Republic of China, located along the east coast of the country. The name comes from jiang, short for the city of Jiangning , and su, for the city of Suzhou. The abbreviation for this province is "苏" , the second character of its name...

, Shanghai

Shanghai

Shanghai is the largest city by population in China and the largest city proper in the world. It is one of the four province-level municipalities in the People's Republic of China, with a total population of over 23 million as of 2010...

, Zhejiang

Zhejiang

Zhejiang is an eastern coastal province of the People's Republic of China. The word Zhejiang was the old name of the Qiantang River, which passes through Hangzhou, the provincial capital...

, Fujian

Fujian

' , formerly romanised as Fukien or Huguing or Foukien, is a province on the southeast coast of mainland China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, and Guangdong to the south. Taiwan lies to the east, across the Taiwan Strait...

 and Guangdong

Guangdong

Guangdong is a province on the South China Sea coast of the People's Republic of China. The province was previously often written with the alternative English name Kwangtung Province...

. At Hai'an in Guangdong, a ferry crosses cars across the Qiongzhou Strait

Qiongzhou Strait

The Qiongzhou Strait , also called the Hainan Strait, is a body of water that separates the Leizhou Peninsula in Guangdong, southern China, to the north from Hainan Island to its south...

 to Haikou

Haikou

Hǎikǒu , is the capital and most populous city of Hainan Province, in the People's Republic of China. It is situated on the northern coast of Hainan, by the mouth of the Nandu River...

 in Hainan, before ending in Sanya.

It is part of the five north-south and seven east-west main routes in China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

.

It is also called Tongsan Expressway.