The journey from Bikaner to Guwahati is a massive 2200 km trek across the breadth of India. This route takes you from the desert of Rajasthan to the gateway of the Northeast. By train, this journey can take up to 45 hours. Most travelers prefer a flight from Bikaner or Jaipur to Guwahati to save significant time.
Total Distance: 2200 km by road, 1800 km straight-line air distance.
This is a very long journey; consider breaking it in Delhi.
November to March for pleasant weather.