Samoa
total: 790 km
paved: 332 km
unpaved: 458 km (1999)
San Marino total: 104 km paved: 104 km (2003)
Sao Tome and Principe
total: 320 km
paved: 218 km
unpaved: 102 km (1999)
Saudi Arabia
total: 152,044 km
paved: 45,461 km
unpaved: 106,583 km (2000)
Senegal
total: 13,576 km
paved: 3,972 km (including 7 km of expressways)
unpaved: 9,604 km (2003)
Serbia
total: 37,887 km
paved: 23,937 km
unpaved: 13,950 km (2002)
Seychelles
total: 458 km
paved: 440 km
unpaved: 18 km (2003)
Sierra Leone
total: 11,300 km
paved: 904 km
unpaved: 10,396 km (2002)
Singapore
total: 3,234 km
paved: 3,234 km (including 150 km of expressways) (2005)
Slovakia
total: 42,993 km
paved: 37,533 km (including 316 km of expressways)
unpaved: 5,460 km (2003)