| Raleigh to Orbetello | 4,604.17 mi (7,409.70 km) |
| Raleigh to Oria | 4,958.95 mi (7,980.66 km) |
| Raleigh to Oristano | 4,565.23 mi (7,347.02 km) |
| Raleigh to Orta Nova | 4,843.39 mi (7,794.69 km) |
| Raleigh to Orte | 4,656.18 mi (7,493.39 km) |
| Raleigh to Ortona | 4,749.63 mi (7,643.79 km) |
| Raleigh to Orvieto | 4,635.35 mi (7,459.87 km) |
| Raleigh to Orzinuovi | 4,454.48 mi (7,168.79 km) |
| Raleigh to Osimo | 4,670.90 mi (7,517.08 km) |
| Raleigh to Ospitaletto | 4,455.85 mi (7,171.00 km) |
| Raleigh to Ostuni | 4,948.20 mi (7,963.37 km) |
| Raleigh to Ottaviano | 4,804.86 mi (7,732.67 km) |
| Raleigh to Ovada | 4,420.88 mi (7,114.72 km) |
| Raleigh to Ozieri | 4,562.73 mi (7,343.00 km) |
| Raleigh to Paceco | 4,815.61 mi (7,749.98 km) |
