| Ashtabula to Orbetello | 4,453.46 mi (7,167.15 km) |
| Ashtabula to Oria | 4,800.57 mi (7,725.76 km) |
| Ashtabula to Oristano | 4,439.66 mi (7,144.94 km) |
| Ashtabula to Orta Nova | 4,686.03 mi (7,541.44 km) |
| Ashtabula to Orte | 4,501.82 mi (7,244.97 km) |
| Ashtabula to Ortona | 4,589.89 mi (7,386.71 km) |
| Ashtabula to Orvieto | 4,480.11 mi (7,210.04 km) |
| Ashtabula to Orzinuovi | 4,287.43 mi (6,899.96 km) |
| Ashtabula to Osimo | 4,506.61 mi (7,252.68 km) |
| Ashtabula to Ospitaletto | 4,287.37 mi (6,899.86 km) |
| Ashtabula to Ostuni | 4,788.56 mi (7,706.44 km) |
| Ashtabula to Ottaviano | 4,654.45 mi (7,490.61 km) |
| Ashtabula to Ovada | 4,262.55 mi (6,859.91 km) |
| Ashtabula to Ozieri | 4,431.24 mi (7,131.38 km) |
| Ashtabula to Paceco | 4,689.94 mi (7,547.73 km) |
