| Aachen to Olivenza | 1,053.34 mi (1,695.19 km) |
| Aachen to Olot | 617.69 mi (994.08 km) |
| Aachen to Onate | 667.78 mi (1,074.69 km) |
| Aachen to Onda | 807.41 mi (1,299.40 km) |
| Aachen to Onteniente | 887.75 mi (1,428.70 km) |
| Aachen to Orihuela | 941.86 mi (1,515.78 km) |
| Aachen to Osuna | 1,085.57 mi (1,747.05 km) |
| Aachen to Ourense | 880.05 mi (1,416.31 km) |
| Aachen to Oviedo | 758.35 mi (1,220.44 km) |
| Aachen to Paiporta | 844.94 mi (1,359.79 km) |
| Aachen to Pajara | 1,872.53 mi (3,013.55 km) |
| Aachen to Palafolls | 648.87 mi (1,044.26 km) |
| Aachen to Palafrugell | 627.56 mi (1,009.96 km) |
| Aachen to Palamos | 632.76 mi (1,018.33 km) |
| Aachen to Palencia | 787.18 mi (1,266.85 km) |
