The fastest way to get to Kanyakumari from Trivandrum is via National Highway 66 and State Highway 179. This route will take you around three hours to complete. First you need to take the National Highway 66 route till you reach the MDR 216. From there you need to get to State Highway 179. You need to continue on this route till you get to National Highway 44. Continue on National Highway 44 till you reach your destination.
Kanyakumari lies to the south of India which is known to have hot temperatures. If you are planning a visit to Kanyakumari during the months of April to June then you need to be prepared for a hot day. This is because the temperature here soars above 35 degree Celsius. This makes it uncomfortable for you to travel. Since Kanyakumari is a coastal area the temperature is hot and humid. This will make you feel uncomfortable throughout the day. It is not recommended to visit Kanyakumari during the summer or the monsoon. However, if you must visit the city during these months then always choose to travel by air conditioned cabs. This will help you feel fresh. Ideally the best time to visit Kanyakumari is during the months of October to March. This is when the temperature is pleasant and you will be able to travel more conveniently.
The best route from Trivandrum to Kanyakumari is via State Highway 179. You can also take the National Highway 66 and State Highway 179 route. Another alternate route is via National Highway 66.
The road conditions between Kanyakumari to Trivandrum are quiet nice. You will be able to travel conveniently to this beautiful town. Most roads in Kerala as well as Tamil Nadu are well maintained. This means that you will not need to worry about a bumpy ride which is why renting a cab makes the most sense.