Hi! The distance from Kolkata to Ganga Sagar is 107.8 km. You can commute via train or you can drive. Travelling by bus is difficult because there are no direct buses and you will have to take multiple detours. Travelling by road, either driving yourself of hiring a cab is the most convenient way. It will give you the liberty of halting as you wish, to admire the scenic beauty on the way. This mode of transportation will take you approximately 5 hours. You can also check out this trip for some details. Happy Travelling!