| Sunninghill to Orbetello | 832.90 mi (1,340.43 km) |
| Sunninghill to Oria | 1,151.55 mi (1,853.25 km) |
| Sunninghill to Oristano | 909.62 mi (1,463.89 km) |
| Sunninghill to Orta Nova | 1,041.25 mi (1,675.74 km) |
| Sunninghill to Orte | 869.51 mi (1,399.34 km) |
| Sunninghill to Ortona | 943.72 mi (1,518.77 km) |
| Sunninghill to Orvieto | 846.84 mi (1,362.86 km) |
| Sunninghill to Orzinuovi | 637.57 mi (1,026.07 km) |
| Sunninghill to Osimo | 855.28 mi (1,376.44 km) |
| Sunninghill to Ospitaletto | 635.03 mi (1,021.98 km) |
| Sunninghill to Ostuni | 1,138.02 mi (1,831.47 km) |
| Sunninghill to Ottaviano | 1,024.11 mi (1,648.15 km) |
| Sunninghill to Ovada | 633.96 mi (1,020.26 km) |
| Sunninghill to Ozieri | 877.85 mi (1,412.76 km) |
| Sunninghill to Paceco | 1,127.75 mi (1,814.94 km) |
