| Altadena to Opwijk | 5,590.11 mi (8,996.42 km) |
| Altadena to Ostend | 5,538.44 mi (8,913.25 km) |
| Altadena to Oud-Heverlee | 5,611.51 mi (9,030.85 km) |
| Altadena to Oud-Turnhout | 5,597.39 mi (9,008.13 km) |
| Altadena to Oudenaarde | 5,577.73 mi (8,976.50 km) |
| Altadena to Oudenburg | 5,542.99 mi (8,920.57 km) |
| Altadena to Oupeye | 5,647.51 mi (9,088.79 km) |
| Altadena to Overijse | 5,609.86 mi (9,028.20 km) |
| Altadena to Overpelt | 5,615.43 mi (9,037.17 km) |
| Altadena to Paal | 5,616.83 mi (9,039.41 km) |
| Altadena to Peer | 5,620.70 mi (9,045.65 km) |
| Altadena to Pepinster | 5,659.83 mi (9,108.62 km) |
| Altadena to Peruwelz | 5,593.37 mi (9,001.66 km) |
| Altadena to Perwez | 5,626.35 mi (9,054.73 km) |
| Altadena to Philippeville | 5,638.99 mi (9,075.08 km) |
