As over 86% of Uttarakhand's terrain consists of hills, railway services are very limited in the state and are largely confined to the plains. In 2011, the total length of railway tracks was about . Rail, being the cheapest mode of transport, is most popular. The most important railway station in Kumaun Division of Uttarakhand is at Kathgodam, 35 kilometres away from Nainital. Kathgodam is the last terminus of the broad gauge line of North East Railways that connects Nainital with Delhi, Dehradun, and Howrah. Other notable railway stations are at Pantnagar, Lalkuan and Haldwani.