| Smethwick to Orbetello | 925.33 mi (1,489.17 km) |
| Smethwick to Oria | 1,240.03 mi (1,995.63 km) |
| Smethwick to Oristano | 1,003.32 mi (1,614.69 km) |
| Smethwick to Orta Nova | 1,130.68 mi (1,819.66 km) |
| Smethwick to Orte | 960.92 mi (1,546.46 km) |
| Smethwick to Ortona | 1,033.23 mi (1,662.82 km) |
| Smethwick to Orvieto | 938.24 mi (1,509.95 km) |
| Smethwick to Orzinuovi | 727.62 mi (1,170.99 km) |
| Smethwick to Osimo | 944.16 mi (1,519.48 km) |
| Smethwick to Ospitaletto | 724.58 mi (1,166.09 km) |
| Smethwick to Ostuni | 1,226.25 mi (1,973.46 km) |
| Smethwick to Ottaviano | 1,115.23 mi (1,794.79 km) |
| Smethwick to Ovada | 726.54 mi (1,169.26 km) |
| Smethwick to Ozieri | 971.69 mi (1,563.78 km) |
| Smethwick to Paceco | 1,221.41 mi (1,965.67 km) |
