Article Detail Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. Similar Questions : 1. Which is the lightest metal ? Answer: Lithium 2. Which is longest tributary river of India ? Answer: Yamuna 3. Which is smallest state by area of India ? Answer: Goa 4. Which is the longest road in India ? Answer: Grand Trunk Road (2500 Km) 5. Which is the largest gulf ? Answer: Gulf of Mexico 6. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. 7. Which is largest Delta of India ? Answer: Sundarban (W. Bengal) Read more from - Longest and Largest