| North Little Rock to Orbetello | 5,242.80 mi (8,437.47 km) |
| North Little Rock to Oria | 5,589.53 mi (8,995.48 km) |
| North Little Rock to Oristano | 5,227.99 mi (8,413.63 km) |
| North Little Rock to Orta Nova | 5,475.10 mi (8,811.32 km) |
| North Little Rock to Orte | 5,291.06 mi (8,515.14 km) |
| North Little Rock to Ortona | 5,378.85 mi (8,656.42 km) |
| North Little Rock to Orvieto | 5,269.33 mi (8,480.17 km) |
| North Little Rock to Orzinuovi | 5,076.01 mi (8,169.04 km) |
| North Little Rock to Osimo | 5,295.28 mi (8,521.94 km) |
| North Little Rock to Ospitaletto | 5,075.82 mi (8,168.74 km) |
| North Little Rock to Ostuni | 5,577.44 mi (8,976.03 km) |
| North Little Rock to Ottaviano | 5,443.77 mi (8,760.90 km) |
| North Little Rock to Ovada | 5,051.70 mi (8,129.92 km) |
| North Little Rock to Ozieri | 5,220.04 mi (8,400.85 km) |
| North Little Rock to Paceco | 5,478.41 mi (8,816.65 km) |
