Hazrat Nizamuddin–Thiruvananthapuram Rajdhani Express

The 12431 / 12432 Hazrat Nizamuddin–Thiruvananthapuram Rajdhani Express is a Rajdhani Express train service in India, connecting Hazrat Nizamuddin in the country capital New Delhi to Thiruvananthapuram Central, the capital of Kerala state. It is the Rajdhani Express with the longest route, covering 2,848.2 km (1,770 mi) in about 41 hours 30 mins running at 69 km/h (43 mph) average speed.