| Birstall to Orbetello | 977.52 mi (1,573.17 km) |
| Birstall to Oria | 1,279.91 mi (2,059.81 km) |
| Birstall to Oristano | 1,068.72 mi (1,719.94 km) |
| Birstall to Orta Nova | 1,173.20 mi (1,888.08 km) |
| Birstall to Orte | 1,009.49 mi (1,624.62 km) |
| Birstall to Ortona | 1,076.26 mi (1,732.08 km) |
| Birstall to Orvieto | 986.85 mi (1,588.18 km) |
| Birstall to Orzinuovi | 773.52 mi (1,244.86 km) |
| Birstall to Osimo | 986.04 mi (1,586.87 km) |
| Birstall to Ospitaletto | 769.27 mi (1,238.02 km) |
| Birstall to Ostuni | 1,265.61 mi (2,036.81 km) |
| Birstall to Ottaviano | 1,162.41 mi (1,870.71 km) |
| Birstall to Ovada | 780.20 mi (1,255.61 km) |
| Birstall to Ozieri | 1,034.78 mi (1,665.33 km) |
| Birstall to Paceco | 1,279.83 mi (2,059.69 km) |
