| Lisburn to Orbetello | 1,143.00 mi (1,839.48 km) |
| Lisburn to Oria | 1,456.23 mi (2,343.57 km) |
| Lisburn to Oristano | 1,215.47 mi (1,956.12 km) |
| Lisburn to Orta Nova | 1,347.58 mi (2,168.72 km) |
| Lisburn to Orte | 1,178.66 mi (1,896.87 km) |
| Lisburn to Ortona | 1,250.20 mi (2,012.00 km) |
| Lisburn to Orvieto | 1,155.97 mi (1,860.36 km) |
| Lisburn to Orzinuovi | 944.99 mi (1,520.81 km) |
| Lisburn to Osimo | 1,160.80 mi (1,868.12 km) |
| Lisburn to Ospitaletto | 941.72 mi (1,515.55 km) |
| Lisburn to Ostuni | 1,442.27 mi (2,321.12 km) |
| Lisburn to Ottaviano | 1,332.89 mi (2,145.08 km) |
| Lisburn to Ovada | 944.14 mi (1,519.45 km) |
| Lisburn to Ozieri | 1,185.58 mi (1,908.01 km) |
| Lisburn to Paceco | 1,437.43 mi (2,313.32 km) |
