| Siegburg to Olivenza | 1,088.60 mi (1,751.93 km) |
| Siegburg to Olot | 636.03 mi (1,023.60 km) |
| Siegburg to Onate | 701.84 mi (1,129.51 km) |
| Siegburg to Onda | 830.97 mi (1,337.31 km) |
| Siegburg to Onteniente | 910.73 mi (1,465.68 km) |
| Siegburg to Orihuela | 964.81 mi (1,552.71 km) |
| Siegburg to Osuna | 1,115.91 mi (1,795.88 km) |
| Siegburg to Ourense | 921.26 mi (1,482.63 km) |
| Siegburg to Oviedo | 798.80 mi (1,285.54 km) |
| Siegburg to Paiporta | 868.19 mi (1,397.21 km) |
| Siegburg to Pajara | 1,907.05 mi (3,069.11 km) |
| Siegburg to Palafolls | 665.59 mi (1,071.17 km) |
| Siegburg to Palafrugell | 643.11 mi (1,034.98 km) |
| Siegburg to Palamos | 648.35 mi (1,043.41 km) |
| Siegburg to Palencia | 823.33 mi (1,325.03 km) |
