| Warminster to Orbetello | 873.70 mi (1,406.08 km) |
| Warminster to Oria | 1,200.23 mi (1,931.59 km) |
| Warminster to Oristano | 936.53 mi (1,507.19 km) |
| Warminster to Orta Nova | 1,088.55 mi (1,751.86 km) |
| Warminster to Orte | 913.11 mi (1,469.50 km) |
| Warminster to Ortona | 991.06 mi (1,594.96 km) |
| Warminster to Orvieto | 890.53 mi (1,433.17 km) |
| Warminster to Orzinuovi | 684.81 mi (1,102.09 km) |
| Warminster to Osimo | 903.85 mi (1,454.61 km) |
| Warminster to Ospitaletto | 683.17 mi (1,099.46 km) |
| Warminster to Ostuni | 1,187.08 mi (1,910.42 km) |
| Warminster to Ottaviano | 1,068.10 mi (1,718.94 km) |
| Warminster to Ovada | 674.86 mi (1,086.08 km) |
| Warminster to Ozieri | 907.60 mi (1,460.63 km) |
| Warminster to Paceco | 1,161.58 mi (1,869.38 km) |
