Why some of the world's fastest trains run on narrow-gauge tracks

Countries & Cities · Published 15 October 2026 Swipe more like this →

In short: While narrow-gauge railways are often associated with industrial mines or rugged mountain terrain, they are far from obsolete. By using heavy-duty engineering, these systems can support high-speed travel and massive freight loads, proving that a narrower track does not necessarily mean a compromise in performance or capacity.

A narrow-gauge railway is defined by a track width of less than 1,435 mm, or 4 ft 8 1/2 in. Historically, these systems emerged from 16th-century European mines, where hand-pushed carts moved ore on narrow tracks. By the 19th century, the technology evolved to include steam power, with the Ffestiniog Railway in 1865 becoming the first public passenger line to adopt steam locomotives on a narrow gauge. These railways were prized for their ability to navigate tighter curves and smaller structure gauges, offering substantial cost savings in mountainous or difficult terrain where standard-gauge construction would be prohibitively expensive.

Modern narrow-gauge networks are surprisingly robust. In countries like Japan, New Zealand, and South Africa, the 1,067 mm gauge is standard. When built to heavy-duty specifications, these lines can handle immense traffic. For instance, the Sishen–Saldanha line in South Africa operates trains with 200 cars, while Brazil's EFVM line utilizes 4,000-horsepower locomotives to pull similarly long freight trains. These examples demonstrate that with proper infrastructure, narrow-gauge lines can rival the performance of much broader systems.

Speed is also a notable capability. While narrower tracks generally limit stability compared to standard gauges, recent improvements have pushed boundaries. Queensland Rail’s Electric Tilt Train has reached 210 km/h, and the world speed record for 1,067 mm gauge rail stands at 245 km/h, set in South Africa in 1978. Today, these railways serve diverse roles, from the Roslagsbanan commuter line in Sweden to extensive sugarcane transport in Cuba and the Philippines, proving that narrow-gauge technology remains a versatile and essential component of global rail infrastructure.

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