| Oldbury to Orbetello | 927.34 mi (1,492.40 km) |
| Oldbury to Oria | 1,242.13 mi (1,999.02 km) |
| Oldbury to Oristano | 1,005.12 mi (1,617.59 km) |
| Oldbury to Orta Nova | 1,132.78 mi (1,823.03 km) |
| Oldbury to Orte | 962.97 mi (1,549.75 km) |
| Oldbury to Ortona | 1,035.32 mi (1,666.18 km) |
| Oldbury to Orvieto | 940.29 mi (1,513.25 km) |
| Oldbury to Orzinuovi | 729.70 mi (1,174.34 km) |
| Oldbury to Osimo | 946.26 mi (1,522.86 km) |
| Oldbury to Ospitaletto | 726.66 mi (1,169.45 km) |
| Oldbury to Ostuni | 1,228.36 mi (1,976.86 km) |
| Oldbury to Ottaviano | 1,117.29 mi (1,798.10 km) |
| Oldbury to Ovada | 728.54 mi (1,172.48 km) |
| Oldbury to Ozieri | 973.54 mi (1,566.75 km) |
| Oldbury to Paceco | 1,223.33 mi (1,968.75 km) |
