| Hamm to Olivenza | 1,150.46 mi (1,851.48 km) |
| Hamm to Olot | 702.47 mi (1,130.51 km) |
| Hamm to Onate | 764.39 mi (1,230.17 km) |
| Hamm to Onda | 897.14 mi (1,443.81 km) |
| Hamm to Onteniente | 976.99 mi (1,572.31 km) |
| Hamm to Orihuela | 1,031.07 mi (1,659.35 km) |
| Hamm to Osuna | 1,180.39 mi (1,899.66 km) |
| Hamm to Ourense | 977.53 mi (1,573.19 km) |
| Hamm to Oviedo | 856.00 mi (1,377.60 km) |
| Hamm to Paiporta | 934.41 mi (1,503.78 km) |
| Hamm to Pajara | 1,969.46 mi (3,169.54 km) |
| Hamm to Palafolls | 731.95 mi (1,177.96 km) |
| Hamm to Palafrugell | 709.37 mi (1,141.63 km) |
| Hamm to Palamos | 714.62 mi (1,150.07 km) |
| Hamm to Palencia | 884.52 mi (1,423.50 km) |
