Spain
total: 666,292 km
paved: 659,629 km (including 12,009 km of expressways)
unpaved: 6,663 km (2003)
Sri Lanka
total: 97,287 km
paved: 78,802 km
unpaved: 18,485 km (2003)
Sudan
total: 11,900 km
paved: 4,320 km
unpaved: 7,580 km (1999)
Suriname
total: 4,304 km
paved: 1,130 km
unpaved: 3,174 km (2003)
Swaziland
total: 3,594 km
paved: 1,078 km
unpaved: 2,516 km (2002)
Sweden
total: 424,947 km
paved: 129,651 km (including 1,591 km of expressways)
unpaved: 295,296 km (2004)
Switzerland
total: 71,297 km
paved: 71,297 km (including 1,728 of expressways) (2004)
Syria
total: 94,890 km
paved: 19,073 km
unpaved: 75,817 km (2004)
Taiwan
total: 37,299 km
paved: 35,621 km (including 789 km of expressways)
unpaved: 1,678 km (2002)
Tajikistan
total: 27,767 km (2000)