| Loughton to Orbetello | 822.73 mi (1,324.05 km) |
| Loughton to Oria | 1,135.55 mi (1,827.49 km) |
| Loughton to Oristano | 907.88 mi (1,461.09 km) |
| Loughton to Orta Nova | 1,026.33 mi (1,651.73 km) |
| Loughton to Orte | 857.39 mi (1,379.84 km) |
| Loughton to Ortona | 928.90 mi (1,494.92 km) |
| Loughton to Orvieto | 834.71 mi (1,343.33 km) |
| Loughton to Orzinuovi | 623.50 mi (1,003.43 km) |
| Loughton to Osimo | 839.74 mi (1,351.43 km) |
| Loughton to Ospitaletto | 620.31 mi (998.30 km) |
| Loughton to Ostuni | 1,121.76 mi (1,805.31 km) |
| Loughton to Ottaviano | 1,011.48 mi (1,627.82 km) |
| Loughton to Ovada | 624.28 mi (1,004.69 km) |
| Loughton to Ozieri | 874.49 mi (1,407.36 km) |
| Loughton to Paceco | 1,121.49 mi (1,804.86 km) |
