Duronto Express, translating to "restless" in Bengali, is a class of long-distance rapid trains operated by Indian Railways. Initially conceived to operate non-stop between origin and destination stations, since January 2016, these trains have been permitted to make additional commercial stops and accept ticket bookings from technical halts.
Before the introduction of trains like the Gatimaan Express and Vande Bharat Express, Duronto trains held the distinction of being the fastest trains in India.
Unlike its counterpart, the Rajdhani Express, which links India's capital, Delhi, to state capitals, the Duronto Express connects major metropolitan areas, state capitals, and the national capital.