Puerto Rico
total: 96 km
narrow gauge: 96 km 1.000-m gauge (2006)
Romania
total: 11,385 km
broad gauge: 60 km 1.524-m gauge
standard gauge: 10,898 km 1.435-m gauge (3,888 km electrified)
narrow gauge: 427 km 0.760-m gauge (2006)
Russia
total: 87,157 km
broad gauge: 86,200 km 1.520-m gauge (40,300 km electrified)
narrow gauge: 957 km 1.067-m gauge (on Sakhalin Island)
note: an additional 30,000 km of non-common carrier lines serve
industries (2006)
Saint Kitts and Nevis
total: 50 km
narrow gauge: 50 km 0.762-m gauge on Saint Kitts for tourists (2006)
Saudi Arabia
total: 1,392 km
standard gauge: 1,392 km 1.435-m gauge (with branch lines and
sidings) (2006)
Senegal
total: 906 km
narrow gauge: 906 km 1.000 meter gauge (2006)
Serbia
total: 3,379 km
standard gauge: 3,379 km 1.435-m gauge (electrified 1,254 km) (2006)
Slovakia
total: 3,662 km
broad gauge: 100 km 1.520-m gauge
standard gauge: 3,512 km 1.435-m gauge (1,588 km electrified)
narrow gauge: 50 km (1.000-m or 0.750-m gauge) (2006)
Slovenia
total: 1,229 km
standard gauge: 1,229 km 1.435-m gauge (504 km electrified) (2006)
South Africa
total: 20,872 km
narrow gauge: 20,436 km 1.065-m gauge (8,931 km electrified); 436 km
0.610-m gauge (2006)