| Oceanside to Noventa Vicentina | 6,138.38 mi (9,878.77 km) |
| Oceanside to Novi di Modena | 6,138.56 mi (9,879.06 km) |
| Oceanside to Novi Ligure | 6,076.33 mi (9,778.90 km) |
| Oceanside to Nuoro | 6,321.94 mi (10,174.18 km) |
| Oceanside to Occhiobello | 6,158.87 mi (9,911.74 km) |
| Oceanside to Oderzo | 6,142.24 mi (9,884.98 km) |
| Oceanside to Oggiono | 6,042.56 mi (9,724.56 km) |
| Oceanside to Olbia | 6,297.05 mi (10,134.13 km) |
| Oceanside to Oleggio | 6,028.56 mi (9,702.03 km) |
| Oceanside to Olgiate Comasco | 6,030.12 mi (9,704.54 km) |
| Oceanside to Olgiate Olona | 6,035.04 mi (9,712.46 km) |
| Oceanside to Omegna | 6,007.04 mi (9,667.40 km) |
| Oceanside to Opera | 6,058.69 mi (9,750.51 km) |
| Oceanside to Oppeano | 6,126.40 mi (9,859.48 km) |
| Oceanside to Orbassano | 6,022.10 mi (9,691.64 km) |
