| Southern Pines to Orbetello | 4,664.91 mi (7,507.45 km) |
| Southern Pines to Oria | 5,019.81 mi (8,078.61 km) |
| Southern Pines to Oristano | 4,625.27 mi (7,443.65 km) |
| Southern Pines to Orta Nova | 4,904.25 mi (7,892.63 km) |
| Southern Pines to Orte | 4,716.99 mi (7,591.27 km) |
| Southern Pines to Ortona | 4,810.55 mi (7,741.83 km) |
| Southern Pines to Orvieto | 4,696.19 mi (7,557.78 km) |
| Southern Pines to Orzinuovi | 4,515.58 mi (7,267.12 km) |
| Southern Pines to Osimo | 4,731.92 mi (7,615.29 km) |
| Southern Pines to Ospitaletto | 4,516.98 mi (7,269.37 km) |
| Southern Pines to Ostuni | 5,009.10 mi (8,061.36 km) |
| Southern Pines to Ottaviano | 4,865.56 mi (7,830.36 km) |
| Southern Pines to Ovada | 4,481.81 mi (7,212.78 km) |
| Southern Pines to Ozieri | 4,622.95 mi (7,439.92 km) |
| Southern Pines to Paceco | 4,875.60 mi (7,846.53 km) |
