Tuvalu
total: 8 km
paved: 8 km (2002)
Uganda
total: 70,746 km
paved: 16,272 km
unpaved: 54,474 km (2003)
Ukraine
total: 169,495 km
paved: 165,820 km (includes 15 km of expressways)
unpaved: 3,675 km (2009)
United Arab Emirates
total: 4,080 km
paved: 4,080 km (includes 253 km of expressways) (2008)
United Kingdom
total: 394,428 km
paved: 394,428 km (includes 3,519 km of expressways) (2009)
United States
total: 6,506,204 km
paved: 4,374,784 km (includes 75,238 km of expressways)
unpaved: 2,131,420 km (2008)
Uruguay
total: 77,732 km
paved: 7,743 km
unpaved: 69,989 km (2010)
Uzbekistan
total: 86,496 km
paved: 75,511 km
unpaved: 10,985 km (2000)
Vanuatu
total: 1,070 km
paved: 256 km
unpaved: 814 km (1999)
Venezuela
total: 96,155 km
paved: 32,308 km
unpaved: 63,847 km (2002)