Q. Can I drive 1000 kms continuously in a day - RC 390?

I myself had ridden rc 390 for about 2430 kms from delhi to Coimbatore in a single attempt in 33 hours but i felt really s****d after that.so when i returned from Coimbatore, i did around 1400 kms in a day and slept at night and then did the remaining 1000 kms on the next day.After this mayhem, i could not feel my palm for a week and the ring finger on my left hand was numb for about 2 months. Also i am a fit guy, so did not suffer any back pain but my shoulders were dead for a couple of weeks.My advice is, yes the bike can do 1000 kms in a day on an highway pretty easily, although it is a mammoth task. Hence you should be fit enough to be able to do that, mentally as well as physically. Lastly i would advice to ride in a time limited manner and not distance limited.

Its pretty painful believe me, i did it once and after that I had to forget that I've a bike. But the real trick is only try to cover that much, which is below your pains and nothing else.

No chance. You will end up filling fuel atleast 4-5 times on the way. Additionally you will have to pay doctors fee the very next day due to joint pain.