| Cromer to Orbetello | 857.29 mi (1,379.67 km) |
| Cromer to Oria | 1,150.55 mi (1,851.63 km) |
| Cromer to Oristano | 963.40 mi (1,550.45 km) |
| Cromer to Orta Nova | 1,045.39 mi (1,682.39 km) |
| Cromer to Orte | 886.12 mi (1,426.07 km) |
| Cromer to Ortona | 948.96 mi (1,527.20 km) |
| Cromer to Orvieto | 863.59 mi (1,389.82 km) |
| Cromer to Orzinuovi | 649.27 mi (1,044.90 km) |
| Cromer to Osimo | 858.30 mi (1,381.30 km) |
| Cromer to Ospitaletto | 644.19 mi (1,036.72 km) |
| Cromer to Ostuni | 1,136.03 mi (1,828.26 km) |
| Cromer to Ottaviano | 1,037.55 mi (1,669.78 km) |
| Cromer to Ovada | 662.55 mi (1,066.27 km) |
| Cromer to Ozieri | 926.38 mi (1,490.87 km) |
| Cromer to Paceco | 1,164.64 mi (1,874.31 km) |
