There are two stations which are close to Nainital; one is Lalkuan and another is Kathgodam.
Lalkuan is approximately 50 to 55 KM's from Nainital and it takes around 2 hours to reach Nainital from Lalkuan by four wheeler whereas Kathgodam is 35 KM's from Nainital and it takes around 1 to 1.5 hours for four-wheeler to take you up from Kathgodam to Nainital. Time taken mentioned above is under normal road conditions without any traffic jam issues and hence it is better to have some margin if you need to catch train etc.
This is a short three day trip to Nainital and day wise itinerary with photographs taken by me along with specific memories attached with destinations explored are as detailed below
I hired a Zen estilo from hotel for full day( 10:30 am to 17:00 pm) and it made possible to cover majority of local attractions . We began trip from Hanuman garhi temple after seeking blessings from lord Hanuman and proceeded onwards covering cave garden, botanical garden,waterfalls,bara pathar,China peak,Sarita tal,khurpatal lake ,Mansa Devi temple etc.