| Oberhausen to Olivenza | 1,113.09 mi (1,791.35 km) |
| Oberhausen to Olot | 675.75 mi (1,087.51 km) |
| Oberhausen to Onate | 727.87 mi (1,171.39 km) |
| Oberhausen to Onda | 867.04 mi (1,395.37 km) |
| Oberhausen to Onteniente | 947.28 mi (1,524.50 km) |
| Oberhausen to Orihuela | 1,001.39 mi (1,611.58 km) |
| Oberhausen to Osuna | 1,145.95 mi (1,844.23 km) |
| Oberhausen to Ourense | 937.08 mi (1,508.09 km) |
| Oberhausen to Oviedo | 815.98 mi (1,313.20 km) |
| Oberhausen to Paiporta | 904.51 mi (1,455.67 km) |
| Oberhausen to Pajara | 1,932.39 mi (3,109.88 km) |
| Oberhausen to Palafolls | 706.34 mi (1,136.75 km) |
| Oberhausen to Palafrugell | 684.54 mi (1,101.67 km) |
| Oberhausen to Palamos | 689.77 mi (1,110.07 km) |
| Oberhausen to Palencia | 846.75 mi (1,362.72 km) |
