| Duisburg to Olivenza | 1,106.79 mi (1,781.21 km) |
| Duisburg to Olot | 670.17 mi (1,078.53 km) |
| Duisburg to Onate | 721.59 mi (1,161.29 km) |
| Duisburg to Onda | 861.16 mi (1,385.90 km) |
| Duisburg to Onteniente | 941.42 mi (1,515.07 km) |
| Duisburg to Orihuela | 995.53 mi (1,602.15 km) |
| Duisburg to Osuna | 1,139.77 mi (1,834.28 km) |
| Duisburg to Ourense | 930.79 mi (1,497.97 km) |
| Duisburg to Oviedo | 809.67 mi (1,303.04 km) |
| Duisburg to Paiporta | 898.64 mi (1,446.22 km) |
| Duisburg to Pajara | 1,926.09 mi (3,099.74 km) |
| Duisburg to Palafolls | 700.86 mi (1,127.93 km) |
| Duisburg to Palafrugell | 679.14 mi (1,092.97 km) |
| Duisburg to Palamos | 684.36 mi (1,101.37 km) |
| Duisburg to Palencia | 840.44 mi (1,352.56 km) |
