| Whitehall to Orbetello | 4,619.17 mi (7,433.83 km) |
| Whitehall to Oria | 4,967.24 mi (7,994.00 km) |
| Whitehall to Oristano | 4,602.42 mi (7,406.88 km) |
| Whitehall to Orta Nova | 4,852.55 mi (7,809.42 km) |
| Whitehall to Orte | 4,667.93 mi (7,512.31 km) |
| Whitehall to Ortona | 4,756.58 mi (7,654.98 km) |
| Whitehall to Orvieto | 4,646.30 mi (7,477.50 km) |
| Whitehall to Orzinuovi | 4,454.66 mi (7,169.08 km) |
| Whitehall to Osimo | 4,673.69 mi (7,521.58 km) |
| Whitehall to Ospitaletto | 4,454.73 mi (7,169.19 km) |
| Whitehall to Ostuni | 4,955.35 mi (7,974.86 km) |
| Whitehall to Ottaviano | 4,820.24 mi (7,757.43 km) |
| Whitehall to Ovada | 4,428.92 mi (7,127.67 km) |
| Whitehall to Ozieri | 4,594.73 mi (7,394.51 km) |
| Whitehall to Paceco | 4,852.90 mi (7,809.98 km) |
