- Russian Railway Network
The Russian railway network is the third longest railway network in the world spanning over 85,500 km. The Russian railway network has connections to many other systems including many European railway systems.
- Chinese Railway Network
The railway network in China is the second longest in the world with a route length of over 100,000 km. The Chinese railway network is home to the largest high-speed railway network in the world which is expected to hit the 50,000 km mark by 2020.
- US Railway System
The United States is home to the longest railway network in the world with a length of over 250,000 km. A large portion of this network is used as freight lines with only about 35,000 km of the total network being used for passenger travel.
Information collected from : https://www.railway-technology.com/features/featurethe-worlds-longest-railway-networks-4180878/