The journey from Dukhar to Udaipur is a long-distance trip covering over 1000 km. You will need to travel through Delhi or Jaipur. The most practical way is to take a train or flight from a major hub. Expect a travel time of 20+ hours by train or a combination of road and air.
Total Distance: 1000 km by road, 850 km straight-line.
The Mewar Express is a good option from Delhi to Udaipur.
September to March for pleasant weather.