Bima is located on the eastern end of Sumbawa island. To reach it from Kediri, you must cross Java, Bali, Lombok, and the entire length of Sumbawa. This is a massive journey of over 1,100 kilometers, taking 40+ hours by bus. It is recommended to break the journey into smaller segments.
Total Distance: 1,100 km driving distance, 950 km straight-line air distance.
This is a very long trip; consider flying for part of the journey.
May to September for dry weather and stable travel conditions.