| Uxbridge to Orbetello | 834.01 mi (1,342.21 km) |
| Uxbridge to Oria | 1,150.57 mi (1,851.67 km) |
| Uxbridge to Oristano | 913.59 mi (1,470.28 km) |
| Uxbridge to Orta Nova | 1,040.67 mi (1,674.79 km) |
| Uxbridge to Orte | 869.93 mi (1,400.02 km) |
| Uxbridge to Ortona | 943.16 mi (1,517.87 km) |
| Uxbridge to Orvieto | 847.25 mi (1,363.52 km) |
| Uxbridge to Orzinuovi | 637.22 mi (1,025.51 km) |
| Uxbridge to Osimo | 854.44 mi (1,375.08 km) |
| Uxbridge to Ospitaletto | 634.44 mi (1,021.03 km) |
| Uxbridge to Ostuni | 1,136.94 mi (1,829.73 km) |
| Uxbridge to Ottaviano | 1,024.37 mi (1,648.56 km) |
| Uxbridge to Ovada | 635.19 mi (1,022.24 km) |
| Uxbridge to Ozieri | 881.29 mi (1,418.30 km) |
| Uxbridge to Paceco | 1,130.25 mi (1,818.97 km) |
