| Dronfield to Orbetello | 950.29 mi (1,529.34 km) |
| Dronfield to Oria | 1,255.56 mi (2,020.63 km) |
| Dronfield to Oristano | 1,039.17 mi (1,672.38 km) |
| Dronfield to Orta Nova | 1,148.18 mi (1,847.82 km) |
| Dronfield to Orte | 983.04 mi (1,582.05 km) |
| Dronfield to Ortona | 1,051.08 mi (1,691.55 km) |
| Dronfield to Orvieto | 960.38 mi (1,545.57 km) |
| Dronfield to Orzinuovi | 747.50 mi (1,202.99 km) |
| Dronfield to Osimo | 961.08 mi (1,546.71 km) |
| Dronfield to Ospitaletto | 743.52 mi (1,196.57 km) |
| Dronfield to Ostuni | 1,241.38 mi (1,997.82 km) |
| Dronfield to Ottaviano | 1,136.32 mi (1,828.73 km) |
| Dronfield to Ovada | 752.57 mi (1,211.15 km) |
| Dronfield to Ozieri | 1,005.58 mi (1,618.32 km) |
| Dronfield to Paceco | 1,251.48 mi (2,014.07 km) |
