| Altena to Olivenza | 1,127.12 mi (1,813.93 km) |
| Altena to Olot | 675.57 mi (1,087.23 km) |
| Altena to Onate | 740.63 mi (1,191.93 km) |
| Altena to Onda | 870.83 mi (1,401.46 km) |
| Altena to Onteniente | 950.57 mi (1,529.80 km) |
| Altena to Orihuela | 1,004.65 mi (1,616.82 km) |
| Altena to Osuna | 1,155.45 mi (1,859.52 km) |
| Altena to Ourense | 957.15 mi (1,540.38 km) |
| Altena to Oviedo | 835.12 mi (1,344.00 km) |
| Altena to Paiporta | 908.04 mi (1,461.35 km) |
| Altena to Pajara | 1,945.83 mi (3,131.52 km) |
| Altena to Palafolls | 704.92 mi (1,134.46 km) |
| Altena to Palafrugell | 682.27 mi (1,098.01 km) |
| Altena to Palamos | 687.52 mi (1,106.45 km) |
| Altena to Palencia | 861.54 mi (1,386.52 km) |
