Duronto express is a newer premium class of train which runs as fast as Rajdhanis. Duronto word comes from restless in Bengali as these trains had no intermediate commercial stops when they started. But since Indian Railways incurred losses for these trains, some technical stops were converted to commercial stops. On some routes (such as Delhi-Kolkata) they take lesser time than corresponding Rajdhani express. Unlike rajdhani some durontos also have non-air conditioned sleeper class. Thus, Duronto trains have classes First AC (1A), AC II-tier, AC III-tier and Sleeper. Bed-rolls in sleeper class of Mixed Duronto Express trains will be supplied to passengers on demand, on payment of stipulated charges. Duronto trains are distinguished by vibrant and colorful vinyl coating on the outer surface of the coaches. 1 duronto train runs from Sadulpur Jn to Bikaner - BKN DURONTO EXP (12259).

Sadulpur Jn to Bikaner BKN DURONTO EXP (12259) departs from Sadulpur Jn station (SDLP) at 14:29 and arrives Bikaner Jn station (BKN) at 18:35. This train has 4 stoppages. Sadulpur Jn to Bikaner duronto fare is Rs.1420 in First AC, Rs.855 in Second AC and Rs.625 in Third AC for this train which includes meal charges also.