What is the world's longest high-speed rail line by route length?

The world’s longest high-speed rail line by route length is the Beijing–Guangzhou high-speed railway.

Also called the Jingguang high-speed railway, it links Beijing Fengtai station with Guangzhou South station across northern, central, and southern China. Its route is about 2,230 kilometres long and passes through major cities including Shijiazhuang, Zhengzhou, Wuhan, Changsha, and Guangzhou.

The railway was built in sections rather than opened all at once. The Wuhan–Guangzhou section began service in December 2009, while the remaining northern sections opened in 2012. This created a continuous high-speed route between Beijing and Guangzhou and made it the world’s longest high-speed rail route.

A common mix-up is confusing it with the longer Beijing–Hong Kong high-speed corridor, which includes connecting lines beyond Guangzhou. The Beijing–Guangzhou railway itself ends at Guangzhou South; through services may continue toward Shenzhen or Hong Kong on other lines.