Nathula pass, changu lake, and you can travel this two place which is ahead of ganktok and can also visit M. G market it's a very good place and yungthang, its actually in other side of ganktok where you should start from newjalpieguri. Backdogra is a beautiful place it's in the sikkim and Bhutan border, a market is also there which is actually a part of Bhutan and u can visit there casually. Its the place where Indian people and Bhutan peoples can visit.
I'm looking for some place which would be like a half-day kind of journey from Gangtok further NE and then 3/4 days stay over there and then back to Mumbai. directly or via Gangtok. any suggestions?
Hey there . 2 Days you can visit gangtok itself . While in Gangtok if you love just strolling by, do visit the zoo.
then for a day you can go to Nathula pass, Changu lake and Baba Mandir. You need a permit for this . Plan in advance since it remains closed on Monday and Tuesday.
Apart from that you may visit Rumtek monastery from Gangtok .
You can also go to South Sikkim the cultural capital of sikkim and Ravangla. While going to all these places, you can be based at Gangtok.