| Winston-Salem to Orbetello | 4,665.48 mi (7,508.37 km) |
| Winston-Salem to Oria | 5,019.26 mi (8,077.72 km) |
| Winston-Salem to Oristano | 4,630.58 mi (7,452.19 km) |
| Winston-Salem to Orta Nova | 4,903.78 mi (7,891.87 km) |
| Winston-Salem to Orte | 4,716.92 mi (7,591.14 km) |
| Winston-Salem to Ortona | 4,809.53 mi (7,740.18 km) |
| Winston-Salem to Orvieto | 4,695.92 mi (7,557.35 km) |
| Winston-Salem to Orzinuovi | 4,512.83 mi (7,262.70 km) |
| Winston-Salem to Osimo | 4,729.93 mi (7,612.09 km) |
| Winston-Salem to Ospitaletto | 4,513.95 mi (7,264.51 km) |
| Winston-Salem to Ostuni | 5,008.29 mi (8,060.06 km) |
| Winston-Salem to Ottaviano | 4,866.39 mi (7,831.70 km) |
| Winston-Salem to Ovada | 4,480.72 mi (7,211.03 km) |
| Winston-Salem to Ozieri | 4,627.14 mi (7,446.67 km) |
| Winston-Salem to Paceco | 4,881.16 mi (7,855.47 km) |
