Article Detail Which is Longest road tunnel in the World ? Answer: Lærdal Tunnel (Norway - 24.51 kilometre) Similar Questions : 1. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. 2. Which is the biggest country in Area ? Answer: Russia 3. Which is longest river in world ? Answer: Nile, Africa 4. Which is Highest Award in India ? Answer: Bharat Ratna 5. Longest rail tunnel in the world ? Answer: Seikan Tunnel (Japan - 53.9 Km) 6. What is the name of tallest Animal ? Answer: Giraffe 7. Which Indian state is having longest coastline ? Answer: Gujrat Read more from - Longest and Largest