Article Detail Which is Longest road tunnel in the World ? Answer: Lærdal Tunnel (Norway - 24.51 kilometre) Similar Questions : 1. Which is the shortest day in the year ? Answer: December 22 2. Which is the largest epic in world ? Answer: Mahabharat 3. Which is smallest continent of world ? Answer: Australia 4. Which is the largest gulf ? Answer: Gulf of Mexico 5. Which is smallest state by area of India ? Answer: Goa 6. Which is longest railway station ? Answer: Grand Central Terminal, Chicago(USA). 7. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. Read more from - Longest and Largest