| Saarlouis to Olivenza | 1,003.55 mi (1,615.06 km) |
| Saarlouis to Olot | 533.82 mi (859.10 km) |
| Saarlouis to Onate | 616.27 mi (991.79 km) |
| Saarlouis to Onda | 731.79 mi (1,177.70 km) |
| Saarlouis to Onteniente | 810.96 mi (1,305.11 km) |
| Saarlouis to Orihuela | 864.93 mi (1,391.97 km) |
| Saarlouis to Osuna | 1,023.21 mi (1,646.69 km) |
| Saarlouis to Ourense | 850.70 mi (1,369.07 km) |
| Saarlouis to Oviedo | 726.77 mi (1,169.63 km) |
| Saarlouis to Paiporta | 768.70 mi (1,237.10 km) |
| Saarlouis to Pajara | 1,819.53 mi (2,928.25 km) |
| Saarlouis to Palafolls | 562.57 mi (905.37 km) |
| Saarlouis to Palafrugell | 539.67 mi (868.51 km) |
| Saarlouis to Palamos | 544.91 mi (876.95 km) |
| Saarlouis to Palencia | 740.99 mi (1,192.50 km) |
