| Mildenhall to Orbetello | 846.05 mi (1,361.59 km) |
| Mildenhall to Oria | 1,149.84 mi (1,850.49 km) |
| Mildenhall to Oristano | 941.18 mi (1,514.68 km) |
| Mildenhall to Orta Nova | 1,042.47 mi (1,677.70 km) |
| Mildenhall to Orte | 877.97 mi (1,412.96 km) |
| Mildenhall to Ortona | 945.40 mi (1,521.47 km) |
| Mildenhall to Orvieto | 855.33 mi (1,376.51 km) |
| Mildenhall to Orzinuovi | 642.13 mi (1,033.40 km) |
| Mildenhall to Osimo | 855.36 mi (1,376.57 km) |
| Mildenhall to Ospitaletto | 638.00 mi (1,026.77 km) |
| Mildenhall to Ostuni | 1,135.68 mi (1,827.70 km) |
| Mildenhall to Ottaviano | 1,031.00 mi (1,659.23 km) |
| Mildenhall to Ovada | 648.95 mi (1,044.39 km) |
| Mildenhall to Ozieri | 906.07 mi (1,458.18 km) |
| Mildenhall to Paceco | 1,149.24 mi (1,849.53 km) |
