| Warwick to Orbetello | 903.61 mi (1,454.22 km) |
| Warwick to Oria | 1,218.55 mi (1,961.06 km) |
| Warwick to Oristano | 982.21 mi (1,580.71 km) |
| Warwick to Orta Nova | 1,109.11 mi (1,784.94 km) |
| Warwick to Orte | 939.22 mi (1,511.53 km) |
| Warwick to Ortona | 1,011.64 mi (1,628.08 km) |
| Warwick to Orvieto | 916.54 mi (1,475.03 km) |
| Warwick to Orzinuovi | 705.98 mi (1,136.17 km) |
| Warwick to Osimo | 922.63 mi (1,484.83 km) |
| Warwick to Ospitaletto | 702.98 mi (1,131.33 km) |
| Warwick to Ostuni | 1,204.79 mi (1,938.93 km) |
| Warwick to Ottaviano | 1,093.54 mi (1,759.88 km) |
| Warwick to Ovada | 704.83 mi (1,134.32 km) |
| Warwick to Ozieri | 950.38 mi (1,529.48 km) |
| Warwick to Paceco | 1,199.85 mi (1,930.97 km) |
