IR's longest single loco haul - Trivandrum Jodhpur Express is hauled by a single Ernakulam WDM 2 throughout it's journey from Trivandrum to Jodhpur. Today, 16804 is ready to commence it's mammoth journey with the train across the country, lasting for 60 hours and a length of 2740 km. Trivandrum Central, 2005-04-11. Jimmy Jose.