Chongqing–Kunming high-speed railway 渝昆高速铁路
Overview
Status	Under construction
Termini	Chongqing West Kunming South
Service
Operator(s)	China Railway High-speed
Technical
Line length	699 km (434 mi)
Number of tracks	2
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Minimum radius	Normal: 7,000 m (4.3 mi); difficult: 5,500 m (3.4 mi)
Electrification	25 kV 50 Hz AC (Overhead line)
Operating speed	350 km/h (217 mph)
Maximum incline	Normal: 2%; difficult: 3%
Route map Legend km Chongqing–Xi'an HSR to Xi'an East Lanzhou–Chongqing railway to Lanzhou link to Chongqing North, Shapingba 0 Chongqing West Chongqing–Guiyang HSR to Guiyang North Chongqing–Guiyang railway to Guiyang North Chongqing West EMU depot link to Chongqing–Wanzhou HSR to Chongqing East 17 Jiulongpo 28 Jiangjin North 57 Yongchuan South 97 Luzhou East Luzhou–Zunyi HSR to Zunyi 123 Luzhou Mianyang–Luzhou HSR to Neijiang North 169 Nanxi Chengdu–Yibin HSR to Chengdu East 193 Yibin East 207 Yibin Yibin West Chengdu–Guiyang HSR Chengdu East ↔ Guiyang East Yibin EMU depot 242 Gaoxian 275 Yunlian 302 Yanjin South 340 Yiliang North 392 Zhaotong East Zhaotong–Weining ICR to Liupanshui 477 Yiche 522 Huize 588 Tianba 637 Xundian Shanghai–Kunming HSR to Shanghai Hongqiao Songming 676 Songming[a] 700 Changshui Airport link to Kunming West, Kunming 731 Kunming South Nanning–Kunming HSR to Nanning Kunming–Yuxi–Hekou railway to Yuxi km This diagram: view talk edit

The Chongqing–Kunming high-speed railway (Chinese: 渝昆高速铁路) is a high-speed railway line currently under construction in China. The line, which runs from Chongqing West to Kunming South, will be part of the Beijing–Kunming corridor. The line will be 699 kilometres (434 mi) long and have a maximum speed of 350 kilometres per hour (220 mph).^[1]

Journey times from Kunming to Chengdu and Chongqing are expected to be around two hours.^[1]

Part of the line is the Yiliang tunnel, on the border of Yiliang County and Yanjin County, which would become the longest high-speed railway tunnel built for to a 350 km/h (217 mph) standard.^[2][3]

Construction on the Sichuan section began on 29 September 2019.^[4] Construction on the Yunnan section began on 20 December 2019.^[1]

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