Vellarada is a border village situated in Thiruvananthapuram district in the state of Kerala, India. It is 42 km from Thiruvananthapuram. It is the southernmost part of Kerala state, sharing its border with Tamil Nadu. Vellarada is said to be the threshold to the high-range areas of the eastern part of Thiruvananthapuram district. The southernmost point of Western Ghats in Kerala is near Vellarada.

The Thiruvananthapuram–Kasaragod Hill Highway or State Highway 59 (SH-59) is a proposed state highway in Kerala. Upon completion, it will be the longest highway in Kerala, extending from Nandarapadavu in Kasaragod district to Parassala in Thiruvananthapuram district, at a length of 1332.16 km. The highway will pass through 13 of the 14 districts, the exception being Alappuzha as that district is not part of the hilly ranges of Kerala.